30, 40, 50% RH humidity indicator. Recording sustained humidity exposure during storage and transport.
Description
MX345 provides a permanent visual record of moisture exposure in sealed packaging. It monitors 30, 40, 50% RH, helping identify whether a moisture-sensitive shipment has encountered conditions above its marked thresholds.
Each marked level contains a blue crystal. Sustained exposure above that level dissolves the crystal and produces a large blue spot. The supplier sheet describes exposure periods of 24 hours or more; this is a record of prolonged exposure, rather than an instantaneous peak reading. The maximum indication does not reset when conditions become dry, and the card cannot be reactivated.
Key specifications
- Indicator levels: 30, 40, 50% RH
- Card dimensions: 3 1/2 × 3 1/4 in
- Behaviour: Non-reversible maximum humidity record
- Pack configuration in supplier sheet: 50 cards per gallon can; 250 per case
Applications
- Recording sustained humidity exposure during storage and transport.
- Logistics through changing climates and long-term storage of moisture-sensitive goods.
- Electronics, automotive and aerospace components, military supplies and conservation packaging.
Handling and storage
Keep the card sealed in its original container until installation. Store in a cool, dry place away from direct sunlight, liquid water and steam. Inspect the permanent indication after transport or storage and replace a used card rather than attempting to reset it.
Further information
| Indicator levels | 30, 40, 50% RH |
|---|---|
| Card dimensions | 3 1/2 × 3 1/4 in |
| Pack configuration (supplier sheet) | 50 cards per gallon can; 250 per case |
| Indicator Behaviour | Non-reversible maximum humidity record |
| Indicator Colour Change | Blue crystal dissolves to form a large blue spot |
Drawings available on request.
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