Model No. ME-8594 012-08438A
Water Reservoir
Model No. ME-8594
Equipment List
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2
3
Included Equipment Replacement
Model Number
1. Graduated Cylinder (Water Reservoir), 1 liter (1)
2. Plastic Tubing, 19.7 feet (6 meters), 1/4” ID x 3/8” OD (1)
3. Plastic Hose Clamps (2)
648-08457
640-012
640-075
*Use Replacement Model Numbers to expedite replacement orders.
Additional Equipment Suggested Model Number
Clamps, three-fingered
Energy Transfer - Hydro Accessory
Energy Transfer - Generator
Large Rod Base
Steel Rod, 90 cm
Beaker, 1000 ml
SE-9445
ET-8772
ET-8771
ME-8735
ME-8738
SE-7288
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Water Reservoir Model No. ME-8594
Introduction
The Water Reservoir is a plastic, graduated cylinder
used as a water source for equipment such as the ETHydro Accessory (ET-8772) and the ET-Generator (ET-
8771).
side port
top hose fitting
The Water Reservoir holds up to 1 liter of water and is
graduated in 10 increments of 100 mL and 90
increments of 10 mL. On the unmarked side of the
reservoir are three ports with three hose fittings. The
hose fittings are glued to the cylinder and are not
removable. The top fitting is for attaching the hose that
connects to an external water supply. The middle
fitting is for attaching the overflow hose, which
prevents water from overflowing the cylinder. Water
exits the cylinder through the bottom hose fitting.
Two plastic clamps are included with the reservoir to
control water flow. The Water Reservoir can be used in
two ways: 1) to supply a preset volume of water and 2)
to supply water continuously at a constant head, or pressure.
Equipment Setup
1. Cut the plastic tubing into pieces of tubing long
enough for your experiment or application. (Note: To
avoid cutting the tubing too short or too long, we
recommend that you set up and measure the tubing
length needed before cutting the tubing.)
middle hose
fitting
bottom hose
fitting
Figure 1: Water Reservoir
2. Fit one piece of tubing over each of the three hose
fittings (Figure 1).
3. Attach one (or two) clamps to the bottom piece of
tubing. Tightly close the clamp to the bottom tube.
(CAUTION: If the clamp is not closed tight, water
will drain out of the bottom tube. To prevent
drainage, slip the tube through the indented portion of
the clamp, and snap the clamp completely shut.)
Note: The fittings on the Water Reservoir are oversized
to reduce friction and maximize water flow. If you have
difficulty inserting the tubing to the fitting, apply a small
amount of glycerine to the tubing.
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Figure 2: Water Reservoir
on rod stand
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Model No. ME-8594 012-08438A
4. Use three-fingered clamps to attach the reservoir to a rod stand (Figure 2).
5. Connect the top hose to a water faucet. (Note: Keep the rod stand below the height of the
water faucet to allow water flow to travel downward.) Turn on the tap water and allow
water to flow in through the top port.
6. For a pre-measured volume: Fill the cylinder to about 800 mL, and turn off the water.
Open the clamp to the bottom tube, allow the water level to drop to the desired level, then
close the clamp.
OR
For a constant pressure or head: Adjust the flow from the tap so that the water doesn’t
flow in from the tap faster than the overflow (from middle fitting) going to the sink.
[Note: With water flowing in from the tap and out through the overflow, the water level
stays constant (as long as the water output is less than the tap water entering the cylinder.)]
For more information about using the Water Reservoir with the ET-Hydro Accessory, see the
instruction sheets supplied with the ET-Hydro Accessory and ET-Generator Manual.
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Water Reservoir Model No. ME-8594
Copyright and Warranty Information
Copyright Notice
The PASCO scientific 012-08438A Water Reservoir Instruction Sheet is copyrighted and all
rights reserved. However, permission is granted to non-profit educational institutions for
reproduction of any part of the 012-08438A Water Reservoir Instruction Sheet, providing the
reproductions are used only for their laboratories and are not sold for profit. Reproduction
under any other circumstances, without the written consent of PASCO scientific, is
prohibited.
Limited Warranty
PASCO scientific warrants the product to be free from defects in materials and workmanship
for a period of one year from the date of shipment to the customer. PASCO will repair or
replace, at its option, any part of the product which is deemed to be defective in material or
workmanship. The warranty does not cover damage to the product caused by abuse or
improper use. Determination of whether a product failure is the result of a manufacturing
defect or improper use by the customer shall be made solely by PASCO scientific.
Responsibility for the return of equipment for warranty repair belongs to the customer.
Equipment must be properly packed to prevent damage and shipped postage or freight
prepaid. (Damage caused by improper packing of the equipment for return shipment will not
be covered by the warranty.) Shipping costs for returning the equipment after repair will be
paid by PASCO scientific.
Technical Support
For assistance with the ME-8594 or any other PASCO products,
contact PASCO as follows:
Address: PASCO scientific
10101 Foothills Blvd.
Roseville, CA 95747-7100
Phone: (916) 786-3800
FAX: (916) 786-3292
Web: www.pasco.com
Email: techsupp@pasco.com
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