- Humidity indicator to monitor performance
- Meets Mil-I-8835A
- For Use With ESD Shielding Moisture Barrier Bags
- Measures the relative humidity (RH) inside a sealed package to allow immediate visual inspection of whether it has sustained unsafe humidity levels
- Fully reversible – by placing indicators in a sealed container with 33 grams (1 unit) of desiccant for four hours.
Lead-free RoHS compliant
100 pieces per can
- Made in the United States of America
This item is made and stocked in Chino, CA
“Humidity Indicator Card (HIC) A card on which a moisture-sensitive chemical is applied such that it will make a significant, perceptible change in color (hue), typically from blue (dry) to pink (wet) when the indicated relative humidity is exceeded. The HIC is packed inside the moisture-barrier bag, along with a desiccant, to aid in determining the level of moisture to which the moisture-sensitive devices have been subjected.” [IPC/JEDEC J-STD-033B section 1.5.7]
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-033C.
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
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. However, we do not recommend
reversing or using cards that have been exposed to high humidity in excess of 60%
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.
1. Store humidity indicators in original sealed container with desiccant when possible
before using, verify that indicator spots have not 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.