Humidity Indicator Plug 30-40-50% Ø 20MM | RH Sight Glass - Conservatis
Level indicator plug. Slight glass moisture indicator - Conservatis
Humidity level indicator plug. 30-40-50% Ø 20MM - Conservatis
Humidity Indicator Plug 30-40-50% Ø 20MM | RH Sight Glass - Conservatis
Level indicator plug. Slight glass moisture indicator - Conservatis
Humidity level indicator plug. 30-40-50% Ø 20MM - Conservatis

Humidity indicator plug 30-40-50% Ø 20MM

E0400703
€37.39
€45.24 Incl. VAT
€37.39 Incl. VAT
Delivery 1 to 3 weeks (subject to availability)

Humidity indicator plug with sight glass for immediate visual control of relative humidity (RH) inside closed packages and containers, especially in barrier-film applications (PE or aluminum‑laminate). The humidity viewer allows you to check whether a critical RH threshold has been reached or exceeded without opening the pack, reducing the risk of corrosion, degradation or failures in moisture‑sensitive product.

The system combines a threaded viewing window with a reversible, cobalt‑dichloride‑free indicator card: the humidity indicator turns from blue to pink as RH rises (and back to blue as it falls), providing a quick reading to decide whether to replace the desiccant and check seal tightness.

Available in different RH reading configurations (by application) and with supply options for a sight glass/window compatible with indicator cards.

The minimum purchase order quantity for the product is 12.

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Quantity unit price (VAT not included)
12 €37.39

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Visual control without openings with the Humidity Indicator Plug for barrier packaging

The humidity indicator with sight glass is a passive monitoring solution designed to verify relative humidity inside closed packs without breaking the seal. In industrial preservation and logistics, opening a package for inspection introduces air and moisture, invalidating control; the viewing window eliminates that risk and provides permanent visual evidence of the internal environment.

The reading is provided by a reversible humidity indicator card that is cobalt-dichloride-free. The blue/pink color change allows immediate interpretation of whether the environment remains within the limits defined for the product. When RH above the allowable threshold is detected, the indicator helps trigger corrective actions: replacing the desiccant, checking barrier-film integrity and reviewing the sealing process.

Key features of the humidity indicator sight glass

  • Quick inspection without opening the container or package, maintaining system tightness.
  • Reversible indicator with color-change reading, useful for monitoring during storage and transport.
  • Cobalt-dichloride-free, suitable where restricted substances must be minimized.
  • Optimized for barrier packaging (PE and aluminum-laminate composites) through a reliable, easy-to-install viewing window.
  • Compatible with desiccants for complete microclimate control and visual traceability of the condition.

Applications of the humidity indicator plug with sight glass

  • Electronics and moisture-sensitive devices (MSD).
  • Optical instruments and precision equipment.
  • Export packaging and long-term logistics.
  • Bulk materials packaging with environmental control requirements.
  • Military and aerospace uses.
  • Pharmaceutical sector (visual control in storage and transport).

Compliance and use in demanding environments with visual humidity indicator

  • Indicators manufactured to meet military specifications (TL, MIL, AFNOR) depending on configuration.
  • Viewing window developed for barrier applications and supplied for simple, reliable installation.

If you need other reading ranges or formats, see the humidity indicators category for alternative cards and sight-glass configurations.


Color
Azul/Rosa (cambio de color: azul a rosa)
Relative humidity
30%, 40%, 50% RH
Accuracy
+/- 5% de humedad relativa (bajo condiciones estándar)
Number of spots
3
Part number
9116
Window - Packaging
WAF 25

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