How often do you need to refill the bottle at different humidity levels?

Please note I added a 30mm fan to move air across the wick. With humidity the 45% range and the fan operating, I need to add water about every 4 days.

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Sper Scientific 736740 Mason's Hygrometer

Sper Scientific 736740 Mason's Hygrometer

Product ID: 16904815

Details

Battery Description
No batteries
Brand
Sper
Color
White
Item Weight
3.8 ounces
Mounting Type
Tabletop

💧Wet bulb & dry bulb humidity measurement

🔴Safe, vivid red liquid display

🌡️Dual temp scales (-10/50°C & 10/120°F)

€ 41.41

Duties & taxes included

In stock

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Description

💧 Stay ahead of the climate curve with vintage precision and modern clarity!

COMPACT TABLETOP ELEGANCE - Sleek white finish fits seamlessly on any desk or shelf.
VIBRANT RED LIQUID DISPLAY - Clear, mercury-free indicator for safe and easy visibility.
CLASSIC WET DRY BULB DESIGN - Time-tested method ensures accurate humidity readings without batteries.
PRECISION DUAL SCALE READINGS - Effortlessly switch between Celsius and Fahrenheit for versatile monitoring.
ECO FRIENDLY MAINTENANCE FREE - No batteries required—reliable performance with minimal upkeep.

The Sper Scientific 736740 Mason's Hygrometer combines a classic wet and dry bulb design with dual temperature scales (-10/50°C and 10/120°F) and a safe red liquid indicator. This battery-free, tabletop device offers reliable humidity measurement with easy-to-read displays, making it an essential tool for professionals seeking precise environmental monitoring.

Specifications

ASIN	B00N5IRZS4
Battery Description	No batteries required
Best Sellers Rank	#211,403 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #101 in Weather Hygrometers
Brand Name	Sper Scientific
Color	White
Customer Reviews	3.7 3.7 out of 5 stars (40)
Included Components	Hygrometer
Item Weight	3.8 ounces
Manufacturer	Sper Scientific
Model	736740
Mounting Type	Tabletop
Number of Items	1
Part Number	736740
Temperature Accuracy	5.56
UPC	077754662617 696738569263
Unit Count	1 Count
Upper Temperature Range	120 °F

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