Fisher Scientific FS-20, FS-20H, FS-30, FS-30H, FS-60 Operator's Manual

Operator's Manual

Tabletop Ultrasonic

Cleaners

Models:

FS-20, FS-20H, FS-30, FS-30H, FS-60, FS-60H, FS-110,

FS-110H, FS-140, FS-140H, FS-220, FS-220H

Fisher

Scientific

Warranty

Warranty: Except with respect to those component parts and uses
which are hereinafter described, FISHER SCIENTIFIC warrants this
ultrasonic cleaner to be free from defects in material and workmanship
for a period of two years from date of

sale.

FlSHER's liability under this
warranty is limited solely to repairing, or, at FlSHER's option, replacing
those products included within the warranty which are returned to
FISHER within the applicable warranty period (with shipping charges
prepaid), and which are determined by FISHER to be defective. This
warranty shall not apply to any product which has been subjected to
misuse, negligence, accident or has been improperly installed,
misapplied,

modified, or repaired by unauthorized persons.

Inspection:

Buyer shall inspect the product upon receipt. The buyer

shall notify FISHER in writing of any claims of defects in material and

workmanship within 30 days after the buyer discovers or should have
discovered the facts upon which such claim is based. Failure of the

buyer to give written notice of such claim within this time period shall be

deemed to be a waiver of such claim.
Disclaimer: The provisions herein stated are FlSHER's sole obligation

and exclude all other remedies or warranties, expressed or implied,
including those related to merchantability and fitness for a particular
purpose.
Limitation of Liability: Under no circumstances shall FISHER be liable
to the buyer for any incidental, consequential, or special damages,
losses, or expenses.
Limitation of Actions: The buyer must initiate any action with respect
to claims under the warranty described in the first paragraph within one
year after the cause of the action has accrued.

/!J-

CAUTION /h

Do not place parts or containers directiy on the bottom of the
cleaning tank; use a tray or wire to suspend items.
Do not allow the cleaning solution level to drop more than one inch
below the top of the tank.

Do not ever use alcohol, gasoline or flammable solutions. Doing so
could cause a fire or explosion. Use only water-based solutions.
Do not ever use mineral acids. These could damage the tank.

Failure to comply with these cautions will void your warranty.

P/N CPN-214-155

2

4

6

6

7
7
7
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9

10
10

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15
17
18

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23

Contents

Front Cover
Warranty
Safety Precautions
Introduction

Ultrasonic Cleaners - Description
Accessories
Unpacking Your Cleaner
Installing Your Cleaner
Equipment Specifications
How Ultrasonic Cleaning Works

Operating Your Cleaner
Operating Your MT or MTH Cleai

Draining Your Cleaner
Optimizing Your Cleaner
Application Hints
Cleaning Methods
Cleaning Solutions

Troubleshooting

Performance

Service Centers

-L.

Safety Precautions

Before using your Ultrasonic Cleaner, please read and thoroughly
understand these safety precautions. Failure to follow them may result
in serious personal injury or property damage.

To avoid electrical shock:

• Do unplug from power source before filling or emptying the tank.

• Do keep the control panel and the area around the cleaner clean and
dry ~ wipe up solution which spills over the tank brim. Water and high

voltage can cause electrical shock.

• Do not operate the cleaner without proper grounding.

• Do not remove the grounding prong on the line cord

plug.

• Do not disassemble your cleaner ~ high voltage inside the cleaner is
dangerous.

• Do not immerse the cleaner in water.

To prevent personal and/or property damage:

• Do use only water-based solutions.

• Do not ever use alcohol, gasoline or flammable solutions. Doing so
could cause a fire, explosion, or serious personal injury and will void
your warranty. Use only water-based solutions.

• Do not ever use mineral acids. These could damage the tank.

• Do not touch the stainless steel tank or cleaning solution - they may

be hot.

• Do not allow fluid temperature to exceed 70°C (160°F).

• Do not place your fingers or hands into the tank while the cleaner is

operating.

Doing so may cause discomfort and possible skin irritation.

Avoid contact with solutions and provide adequate ventilation.

• Do not use solutions containing chlorine bleach.

To prevent damage to the cleaner:

• Do change your solution regularly.

• Do not operate the cleaner dry

• Do not place parts or containers directly on the bottom of the cleaning
tank; use a tray or wire to suspend items. Failure to comply may
cause transducer damage and will void your warranty.

• Do not allow the cleaning solution level to drop more than one inch

below the top of the tank with heat or ultrasonics on. Failure to
comply may cause transducer and/or heater damage and will void
your warranty.

Introduction

Ultrasonic Cleaners
Fisher ultrasonic cleaners include six models with sizes of 3/4 gallons, 1

gallon,

1 Vi gallons, 2 Yz gallons, 3 Yz gallons and 5 Vz gallons. Each

model is constructed using durable industrial style 40kHz transducers.
These provide increased cleaning power along and with built in sweep
frequency, ensure uniform cleaning activity throughout the

bath.

The

five(5) larger size units have drains and are supplied with tank drain kits.

Each model can be purchased in two different configurations -MT with a

Mechanical Timer, and MTH with a Mechanical Timer plus Heat

c

When you first fill your unit or refill it with fresh solution, use warm water
for the solution. Turn on the heater (press the HEAT switch, if available),
turn on the ultrasonics (rotate the Timer knob), add the cover and the
solution will heat to temperature.

Accessories For Your Cleaner

All units include regular covers. Perforated insert trays, beaker covers,
and beakers are available as accessories.

Unpacking Your Cleaner

Please check your cleaner and its carton carefully for any external or

internal damage. If you find shipping damage, contact your shipping
carrier immediately for resolution. Please retain your packaging
materials for future use.

Installing Your Cleaner

Check the label on the back of the cleaner for correct input power
requirements. Position your cleaner within easy reach of a standard
grounded electrical outlet. Do not place the cleaner on a circuit which
could become overioaded.

If your cleaner does not operate correctly, first refer to the
troubleshooting section for possible causes, or contact an authorized
service center listed at the back ofthis manual, for additional information.

Equipment Specifications

Fisher
Model

FS-20

FS-30

FS-60

FS-110

FS-140

FS-220

Tank
Capacity

3/4 gal.
(2.8 L)

1 gal.

(3.7 L)
1-1/2 gal.

(5.7 L)

2-1/2 gal.
(9.5 L)

3-1/2 gal.
(13.3 L)

5-1/2 gal.
(20.8 L)

Tank
Size

L6"
W: 5.5"
D:6"

L: 9.5"
W: 5.5"
D:6"

L: 11.5"
W:6"

D:6"
L 11.5"

W: 9.5"
0:6"
L: 11.5"

W: 9.5"

D:8"
L 19.5"

W:11.5"

D:6"

Overall
Size

L: 8.9"
W: 8.9"
H: 11.3"

L: 10.4"

W: 8.9"

H: 11.3"

L: 12.7"
W: 9.5"
H: 11.3"

L 12.7"
W: 13"
H: 11.3"

L 12.7"
W: 13"
H: 13.3"

L:21.4"
W:

15.4"
H:11.3"

Weight

11 lbs.

(5KG)

13 lbs.
(5.9
KG)

15 lbs.
(6.8
KG)

19 lbs.
(8.6
KG)

20lbs.
(9.1
KG)

32 lbs.
(14.5
KG)

Ultra
Sonic
Power

SOW

130W

130W

185W

185W

320W

Heater
Power

63W

109W

205W

284W

284W

561W

Total
Power
(MTH)

80W
63W

143W

130W
109W
239W

130W
205W
335W

185W

284W
469W
210W
284W
469W
320W
561W
881W

NOTE:
All models have an operating frequency of 40kHz.
Voltages available: 120V or 220V ± 10%, 50/60Hz (Check your label)
All cleaners have CSA approval and comply with FCC regulations.
All 220V units meet CE standards.
Units will cause GFl outiets to trip.
All units have a ground leakage current less than .50ma.

How Ultrasonic Cleaning Works

Ultrasonic sound is sound transmitted at frequencies generally beyond

the range of human hearing. In your ultrasonic cleaner, ultrasonic sound

(sonics) is used for cleaning materials and parts. This is how it works

As the sound waves from the
transducer radiate through the
solution in the tank, they
cause alternating high and low

pressures in the solution

1.

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During the low pressure stage,
millions of microscopic
bubbles form and grow.

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During the high pressure
stage,

the bubbles implode, or
"collapse" releasing enormous
amounts of energy. These
implosions act like an army of
tiny scrub brushes. They work
in all directions, attacking
every surface and invading all
recesses and openings. This
process is called CAVITATION

Operating Your Cleaner

If this is the first time you are using the cleaner, please read this whole

section before proceeding.

Operating Your MT or

MTH

Cleaner

MT Cleaner

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S<lelrtlfic

FS 2 O

MTH Cleaner

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Ptaher
Scientific

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FS20H

Explanation of Controls

Control

HEAT
(MTH only)

TIMER
TIMER

Function

Activates heat to 60°C maximum.
Activates ultrasonics and sets time.

Use to tum unit Off.
Turn clockwise for variable time 0-60 mins. Turn counterclockwise to
hold position for continuous operation.

10

Before You Start Cleaning

Zl CAUTION !^

Do not place parts or containers directly on the bottom of

the

cleaning

tanks;

use a tray or wire to suspend items.
Do not allow the cleaning solution level to drop more than one inch
below the top of the tank with the cleaner on.
Do not ever use

alcohol,

gasoline or flammable solutions. Doing so

could cause a fire or

explosion.

Use only water-based solutions.

Do not ever use mineral

acids.

These could damage the tank.

Failure to comply with these cautions will void your warranty.

Step

1

2

3
4
5

Action
Select your cleaning solution (check with Chemical Supplier for

solution effects on metals).

Allowing for the volume of the parts you will be cleaning and

cleaning solution, fill the tank with warm tap water to the

operating level (one inch from the top).

Add cleaning solution to the tank

water.
Plug the cleaner into a grounded outiet.
For maximum efficiency, refer to page 15, "Optimizing Your

Cleaner" before proceeding.

NOTE:

If

this

is the first time you are running the cleaner, or if

you

have changed

cleaning solution, you must degas the solution. If

not,

move to

"Cleaning It^ms".

11

Degassing

Step

1

2

Action
Tum the HEAT ON (MTH Cleaner only).
Turn the TIMER to 5-10 and let the cleaner run to allow the

solution to "degas".
NOTE:

Refer to page 16 for information on degassing.

Cleaning Items

Step

1

2
3

4
5

Action
Set the TIMER for the amount of time you wish the items to be
cleaned.

To stop ultrasonics at any time, turn the TIMER to
zero.
Place the items into a basket or perforated tray.
Slowly lower the tray into the tank. Do not allow items to

contact the tank bottom. Do not stir the solution.
When items are clean, slowly remove them from the cleaner.
Rinse the clean items with clean water and dry them, if
necessary.

12

Draining Your Cleaner

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WARNING •• ^

Do not immerse the cleaner in water.

Unplug the cleaner from the power source.

The 3/4 gal. model does not have a drain. To empty, carefully tilt unit
toward back left corner and pour the used solution into a waste disposal

unit, rinse the tank thoroughly, dry off outside skirt and refill with new

solution.

t<y

13

Five larger models include a drain and valve kit.

step Action

Place the cleaner to allow easy reach of the drain tube into a waste disposal
unit.
Remove the thread protecting cap from the end of the cleaner's drain pipe.
This will expose the white teflon sealing tape on the drain pipe's threads.
Hand tighten the drain valve onto the drain pipe over the white teflon sealing

tape.

Finish tightening the valve in place using on adjustable or a 21mm

wrench.

Tighten the valve no more than one full tum when using the wrench

until the handle is on top.
CAUTION:

Over tightening of the valve can cause damage to the ultrasonic

tank. Always use teflon sealing tape or a sealing paste designed for use with
stainless steel if retightening or refitting ofthe drain valve is required.

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Hand tighten the hose adaptor into the end of the drain valve. Slide the drain
tube over the barbed hose adaptor end.

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Close the drain valve by turning the handle perpendicular to the valve body
and the cleaner is ready to fill with solution. To open the valve and drain the
cleaner, tum the handle so that it is in line with the valve body.

14

Optimizing Your Cleaner

Cleaning - check the tank for contamination whenever you change
solution.

If necessary, remove contaminants with a nonabrasive cloth

and water.
Emptying - always unplug the cleaner before emptying the tank. Empty

the solution into a waste disposal unit.
Filling - always unplug the line cord before filling the tank. Fill the

cleaner to the operating level (one inch from the top with beaker/tray in
place), using warm tap water.

Low solution level - will cause the cleaner to

fail.

When you remove

heavy or bulky loads from the cleaner, the solution level may drop below

the operating level. If

so,

be sure to replace lost solution and degas, if

necessary, depending on the amount used.
Overload-do not rest any items on the tank bottom. Weight on the tank

bottom dampens sound energy and will cause damage to the transducer.

Instead,

use a tray and/or beaker positioning cover to support all items.

Allow at least one inch between the tank bottom and the beaker or

receptacle for adequate cavitation.

Covers - allow the cleaner to heat up faster, to a higher temperature,
and limit excessive liquid evaporation. However, leaving the cover on
with heat and ultrasonics operating can cause the solution to become
very hot, diminishing effectiveness and creating the potential for burns.

Heater - the heater may cause some discoloration of the tank

wall.

This

is normal and will not affect the performance of the unit.

Solution temperature- the fastest method to heat your cleaner is to fill
with warm solution, use heat, ultrasonics (which also adds heat), and a
cover.

Apparent ultrasonic activity - the amount of visible ultrasonic activity is
not necessarily related to optimum cavitation for cleaning.

15

Chemical Solution Management

Degassing - fresh solutions contain many dissolved gases (usually air),
which reduce effective ultrasonic action. Solutions will naturally degas
during the first five to ten minutes of operation.

Heat- increases the chemical activity of cleaning solutions.
Surface tension - can be reduced by adding a detergent or surfactant to

the

bath.

Reduced surface tension will increase cavitation intensity and

enhance cleaning.
Solvents - never use solvents. Vapors of flammable solutions can

collect under the cleaner, where ignition is possible from electrical
components.

Renewal - replace cleaning solutions often to improve cleaning activity.
Cleaning solutions, as with most chemicals, will become depleted over

time. Solutions can become contaminated with soil particles which coat
the tank bottom, inhibiting ultrasonic activity.

16

Application Hints

!\ CAUTION /h

Never clean novelty or inexpensive jewelry in the cleaner. The
combination of heat and vibration may loosen a cement-held setting.
Never clean the following gemstones, emerald, amethyst, peari,

opal,

coral,

turquoise, peridot or lapis lazuli. They are "soft" and may be

damaged.

First time cleaning - first experiment with one piece, then proceed with

the remainder.

Solution level - Be sure to maintain solution level within one inch of the

tank top. Surface activity can vary with liquid level.

Load size - It is faster and more efficient to run several small loads
rather than a few big loads.

Placing items - Never allow items to sit on the bottom of the tank.

Always place them in a tray or beaker or suspend in the solution.

Rinsing items - After cleaning, use a clean water bath to rinse away

chemicals adhering to items.
Lubricating items - When necessary, re-lubricate items immediately

after cleaning.
Drying items - Air drying at room temperature works for some items.

Place parts requiring faster drying time under hot air blowers or in ovens.

17

Cleaning Methods

There are two methods of cleaning - direct and indirect. Each has
advantages and disadvantages. When in doubt, run test samples using
both methods to decide which one produces the best results for you.

Direct Method

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How it works:

• Fill the tank with warm water and a cleaning solution.

• Place the items to be cleaned in a perforated tray and lower them into
the tank. You can also suspend items on a wire and then immerse
them in the solution.

The advantages of this method are the simplicity of operation and

cleaning effectivness.

18

Indirect Method

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How /f works:

• Fill the tank with warm water and a cleaning solution.

• Pour your cleaning solution into one or more beakers or into a solid
insert tray

• Place the beakers in a beaker positioning cover or a solid insert tray
to fit your cleaner. Beakers should not touch the tank's bottom.

The advantages of this method are:

• Removed soil stays in the beaker or tray so you can easily examine,
filter or discard it.

• You can use one or more solutions at the same time.

- two completely different cleaning solutions.

- one beaker or tray with a cleaning solution and one with a rinse

solution.

• Cleaning solution in your tank needs to be changed less often.

19

Cleaning Solutions

L CAUTION /'

Do not use alcohol, gasoline, bleach, mineral acids, solutions with a flash
point semi-aqueous or combustible liquids in ultrasonic tanks, or you will
void the warranty. Only use non-flammable and water-based solutions.

Solution Types

Water-based solutions are either slightly acidic or alkaline. They include
detergents, soaps and industrial cleaners designed to remove specific

soils.

Acidic water-based solutions: remove rust tarnish or scale. They

range from mild solutions that remove tarnish, to concentrated, inhibited

acidic solutions that remove investment plaster, milk-stone, zinc oxide
and rust from steel and cast iron as well as smut and heat-treat scale
from hardened steel.

Alkaline water-based solutions: include carbonates, silicates and
caustics. These cause emulsifying action, which keeps soil from
redepositing on the cleaned surface, and improves cleaning action in
hard water.

Alkaline water-based solutions: include carbonates, silicates and
caustics. These cause emulsifying action, which keeps soil from
redepositing on the cleaned surface, and improves cleaning action in
hard water.

Alkaline strength
Mild

Mild to strong

Heavy-duty

Removes:
Light oils and greases, chemical deposits, general

lab and handling soils.
Heavy grease and oil, waxes, vegetable oils, inks,

wax or fat-base buffing and polishing compounds,
milk residues and carbohydrates.

Mill scale, heat-treat scale, corrosion or oxides.

Chemistry Concentrations

Chemistry concentrations may vary. The amount you use depends on
the detergent and the type of soil to be removed. Follow instructions on
the chemistry container for the effects of chemistry on metals.

20

Troubleshooting

If your cleaner does not operate satisfactorily, please check the tables
below for possible causes before calling your authorized service center.

l-\

WARNING / !\

High voltage inside - dangerous shock hazard.

DO NOT attempt to disassemble or repair the cleaner.

Problem
Cleaner will not

start.

Cleaner
operates but
does not heat
solution

Decreased
ultrasonic
activity.
NOTE:

Refer to

page 22 for

cavitation check.

Cause
Cleaner not plugged in

properly.
MT- Mechanical timer

not ON.

Heater malfunctions.

MTH-HEAT not ON.

Solution is not

degassed.

Solution is spent.

Solution level is
incorrect for

load.

Tank bottom is
covered with soil

particles.

Using deionized water
in the tank.

What to do
Plug into functioning
electrical outiet.
Turn timer clockwise.

Call nearest authorized
service center.

Turn heat ON

Make sure that tank was
filled with warm tap water
plus cleaning solution and
has run 5-10 minutes.

Change solution
Adjust solution to +/- 3/8

inch from current level.

Empty, then clean tank
with warm water. Wipe

with a nonabrasive cloth.

Deionized water does not

cavitate as actively as

soapy tap water.

21

Performance
Check your cleaner periodically to test the level of activity of the
ultrasonic cavitation. Frequency of testing will depend on your use of the
cleaner, however, Branson suggests running this test monthly.

Glass Slide Test

You will need the following equipment

• Frosted microscope glass slide

(1"

x 3"), such as Fisherbrand

#12-550-34

• No. 2 lead pencil; and

• General purpose dish detergent, such as "Joy" liquid soap.

Test procedure:

1.

Prepare a fresh solution with general purpose dish detergent

(concentration 1%) and warm tap water (120° - 140°F).

2.

Fill the cleaner to within one(1) inch of the tank top.

3. Turn the ultrasonics on for at least five minutes to allow for degassing.

4.

Prepare the glass slide by first wetting the frosted portion with tap

water.

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5. With the No. 2 pencil, on the frosted portion make an "X" from corner
to corner.

6. Immerse the frosted end ofthe slide into the solution. Hold the slide

vertically and center it in the solution.

The ultrasonics will begin immediately to remove the lead from the slide.
All lead should be removed within 10 seconds. If your cleaner passes
this test, its ultrasonic cavitation is acceptable.

NOTE:

To ensure consistency from test to test, be sure to repeat test conditions

- use the same solution concentration, liquid level, temperature, type of
pencil,

length of degassing, etc.

22

Service Centers

With normal use, your Ultrasonic Cleaner should not require servicing.

However, if it fails to operate satisfactorily, first try to diagnose the
problem by following the suggestions in the Troubleshooting Guide.

If you find that your cleaner needs repair, carefully pack and return it to

your nearest service center. If under warranty, remember to include

proof of purchase.

!: WARNING:!::

You will void the warranty if you disassemble your

cleaner. High voltage inside the cleaner is dangerous.

Your cleaner will be return shipped by ground service unless you specify
otherwise.

Fisher Services Division

Traditional Lab Service Centers

Name

ATLANTA

Fisher Scientific Co.

LOS ANGELES
Fisher Scientific Co.

CHICAGO
Fisher Scientific Co.

PITTSBURGH
Fisher Scientific Co.

Address
2775 Horizon Ridge Court
Suwanee, GA 30024

1495 W. 9"'Street
#102
Upland,

CA 91786-5641
4500 Turnberry Drive
Hanover Park, IL 60103

585 Alpha Drive
Pittsburgh,

PA 15238

Tel/Fax Number
Tel:

770-614-1122
F/\X: 770-614-1106
Other #: 770-614-1090
Contact: Cheryl Liston

Tel:

919-949-2200
FAX: [phone]
Contact; Charles Culpepper

Tel:

630-259-4663
Fax: [phone]
Other*: 630-259^648
Contact: Rey Noche

Tel:

412-963-1668

Fax:[phone]

Contact: Art DeThomas

23

Fisher Services Division

Traditional Lab Service Centers

Name
PUERTO RICO
Fisher Scientific Co.

Address
Carretera#1,

KM 56.4
Barrio Montellano
Cayey, PR 00737

Tel/Fax Number
Tel:

787-738-4231
FAX: [phone]
Contact: Adolfo Wittgreen

Safety Service Centers

Name
LEESPORT
Fisher Scientific Co.

HOUSTON
Fisher Scientific Co.

TUSTIN
Fisher Scientific Co.

Address
Leisz's Road, RD. #1
Leeport, PA 19533

3500 So. Richey Road
Suite 100
Houston,

TX 77017

1495 W.

9"'Street

#102

Upland,

CA 91786-5641

Tel/Fax Number
Tel:

610-926-5237
FAX: [phone]
Contact: Mike Taddeo

Tel:

713-941-7666
FAX: [phone]

Other #: 713-941-8964
Contact: Jack Lambert
Tel:

909-949-2200
FAX: [phone]

Contact: Charles Culpepper

24

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Instructions

Fisher
Series 100
Thermix® Hot Plate

Model 100M

Catalog No. 11-493-1

DOM

& -101M

The Fisher Series

10OM

Thermix

'^

Hot plate

'" a compact, thermostatically-controlled

)oratory appliance. Providing fast and
oven heat distribution — to 370°C in 15
minutes — the unit features a 15 cm (6 in.)

square cast aluminum top plate, die-cast

aluminuni base and replaceable heating

element (insulated and enclosed for

effi­ciency and safety). In addition, a rear-panel
thumbscrew clamp allows the unit to be
mounted on a support or a lattice rack and
be positioned such that flasks and beakers
of various sizes can rest on and contact the
top plate properly Four integral feet protect

table and bench tops; a perforated metal

strip underneath the top plate helps provide
air circulation and maintain a relatively cool
base temperature.

UNPACKING

The Model 100M hot plate is shipped in a
single carton, completely assembled. It is
supplied with these instructions and a

warranty

card,

which should be completed
and returned as soon as possible. In cases
where shipping damage is observed, keep

the unit and carton intact — including the

packing material — and file claim with the

final carrier. Usually the firm will send an

inspector to ascertain liability

ELECTRICAL
REQUIREMENTS

italog No.

-493-1OOM
115V
25-60 Hz
450 Watts

3.9 Amps

Catalog No.
11-493-1

OIM
230V
25-60 Hz
450 Watts

2.0 Amps

OPERATION

The Model 10OM hot plate provides top

plate temperatures from ambient to about
370°C (700°F), consuming power only
when current is supplied through the
thermostat to the heating element. For
convenience, the temperature control dial
is marked with seven arbitrary positions to
aid in reproducing a specific temperature,
and an OFF position to shut the hot plate
down without disconnecting it from power
source.

To operate the unit:

1.

Turn temperature control to OFF

2.

Check data plate for power require-

ments and insert line cord plug into
suitable electrical outlet.

3. Place solution to be heated on top plate.

4.

Adjust temperature control until desired

process temperature is obtained.

REPLACEMENT PARTS

Item

Schematic
Code

Thermostat THM1
Knob
Heater HTR1
Une PI

Number

115V 230V
09179 09179

18953 18953
09169 09174
06643 09172

Part No. 44640
Series 100 Thermix® Hot Plate
Operation Procedures

Effective with

Serial No. 101 for 115V

Serial No. 101 for 230V
Published 12-80
First Issue (0-1214-02/1294)

Instrument Manufacturing Division Fisher Scientific Company