Desco 13868 User Manual

DRAWING NUMBER

13870

DATE:

July

2008

Humidity Indicator Cards (HIC)

DESCO WEST:3651 WALNUTAVE., CHINO, CA91710 WEB SITE: Desco.com
PHONE [phone] FAX [phone]

DESCO EAST:90 HUDSON RD, CANTON, MA02021-1407
PHONE [phone] FAX [phone]

© 2008 DESCO INDUSTRIES INC.

Employee Owned

HUMIDITY INDICATOR CARDS

An integral part of a complete moisture barrier packaging assembly is the
Humidity Indicator Card. High relative humidity can cause significant, possibly
irreparable damage to sensitive equipment, supplies, and products. To ensure
dehydration measures work, humidity indicator cards measure the relative
humidity (RH) inside sealed packages to allow immediate visual inspection of
whether it has sustained unsafe humidity levels.

The Monitor Card contains chemically impregnated, humidity sensitive, indicating
spots that will change color with moisture. The comparison bar is used to
determine relative humidity of air. Select the indicating spot that most closely
matches the color of the comparison bar. The measured relative humidity is the
percentage indicated on the matching spot. The chemical reaction of the
indicating spots is completely reversible; the spots will continue to change color
as the moisture levels change.

Humidity Monitor cards are sold in cans. The 2" x 3" blotting paper cards indicate
relative humidity. Humidity Indicator Cards should be inserted and sealed within
an Moisture Barrier Bag with the desiccant packs.

Item# Unit Size Std. Package Relative Humidity

13868 2" x 3" Card 125 pieces/can 5/10/15
13869 2" x 3" Card 125 pieces/can 5/10/60
13870 2" x 3" Card 100 pieces/can 10/20/30/40

The 13868,13869 and 13870 humidity indicator cards meet the requirements of
MIL-I-8835 and IPC/JEDEC J-STD-033A.

“Humidity Indicator Card (HIC) Acard on which a moisture-sensitive chemical is
printed such that it will change color from blue to pink when the indicated relative
humidity is exceeded. This is packed inside the moisture-sensitive bag, along with
the desiccant, to aid in determining the level of moisture to which the moisture­sensitive devices have been subjected.” (IPC/JEDEC J-STD-033A section 1.5.7)

Application

1. The humidity indicator spots will change from blue (dry condition) to pink
(humid condition) as the relative humidity changes in the volume of air
surrounding the indicator.

2. Relative humidity is indicated at the lavender color.

3. Indicator spots will change within eight hours of being exposed to a change in
relative humidity.

4. The humidity indicator spots are reversible, and the pink spots will change back to
blue when the volume of air is dried. Humidity indicator cards with pink or lavender
spots can be returned to a blue color by placing indicators in a sealed container
with 33 grams (1 unit) of desiccant for four hours.

5. The highest humidity indicator spot should be blue before being put into use.

6. The humidity indicator will be at its most accurate at a temperature of
23 °C (73 °F).

7. Avoid contact with indicator spots. Wash any irritated areas with clean water.

Handling

1. Store humidity indicators in original container with desiccant when possible and
keep sealed. Never reuse a indicator card if it has already changed color.

2. Replace desiccant bag after three openings of container.

3. Store in dry, cool area.

4. Keep indicators out of direct sunlight.

5. Keep humidity indicators away from water or steam.

6. Ammonia gases will damage humidity indicators.

Made in America

13870

13868

13869

1. IDENTIFICATION OF THE SUBSTANCE/PREPARATION AND THE
COMPANY/UNDERTAKING

Product information

COMMERCIAL PRODUCT NAME: REVERSIBLE HUMIDITY INDICATOR
COMPANY: Desco

3651 Walnut Ave.

Chinio, CA. 91710
PHONE: [phone]
FAX: [phone]

2. COMPOSITION/INFORMATION ON INGREDIENTS

Chemical nature: Cobalt dichloride on cardboard

3. HAZARDS IDENTIFICATION

None under normal use

4. FIRST AID MEASURES

General advice: None
Eye contact: Rinse immediately with plenty of water, also under the

eyelids, for at least 15 minutes
Skin contact: Wash off with soap and plenty of water
Inhalation: N.A.
Ingestion: Rinse mouth

Notes to physician

Treatment: None

5. FIRE-FIGHTING MEASURES

Suitable extinguishing media: Use extinguishing measures appropriate to the envirn.
Extinguishing media which must

not be used for safety reasons: None

Material Safety Data Sheet

May be used to comply with
OSHA’s Hazard Communication Standard,
29 CFR 1910. 1200. Standard must be
consulted for specific requirements.

NFPADesignation 704

Degree of Hazard:
4 = Extreme
3 = High
2 = Moderate
1 = Slight
0 = Insignificant

0

0

0

1

Health
(Blue)

Special Hazard

Reactivity

(Yellow)

Flammability

(Red)

Components CAS-No. Symbol(s) R-phrase(s) Concentration

cobalt(II) chloride 7646-79-9 T, N R49, R22, R42/43 >0.10 - <1.00%

R50-53

6. ACCIDENT AL RELEASE MEASURES

Environmental precautions: Do not flush into surface water or sanity sewer system
Methods for cleaning up: Take up contaminated material by mechanical means,

load into clean containers, and dispose of in
accordance with legal regulations

7. HANDLING AND STORAGE

Handling

Safe handling advice: No special precautions required

Storage

Requirement for storage area
and containers: Keep in a dry place

8. EXPOSURE CONTROLS/PERSONAL PROTECTION

Components with workplace parameters

Personal protective equipment

Respiratory protection: N.A.
Hand protection: Protective gloves
Eye protection: N.A.
Skin and body protection: Not required
Hygiene measures: Wash off with warm water and soap
Protective measures: Prophylactic use of protective ointment (barrier

cream) is recommended.

9. PHYSICAL AND CHEMICAL PROPERTIES

Appearance

Form: Plates
Color: Pink to blue
Odor: None

Other data

Water solubility: Partly soluble, max. 600 ppm CoCl2 can be leached

out

pH: 4.5 - 6

Components CAS-No. Value Remarks Basis

cobalt 7440-48-4 0.5 mg/m3 Inhalable dust. TRGS900

Sensitizer TRK