FH20 detects low level concentrations of hazardous formaldehyde vapors with a resolution of 0.01 ppm
Electrochemical sensor for formaldehyde detection
Trend display available for easy understanding about formaldehyde change in up to 8 days
FH20 should be the smallest and the lightest formaldehyde monitor in the world
FH20 can also measure the ambient temperature and the relative humidity; Selectable °C and °F
HCHO Specification Measurement Range: 0~5.0ppm (0~6.25mg/m3) Resolution: 0.01ppm Response Time: <30 seconds Green: <0.08 mg/m3 or <0.06ppm; Yellow: 0.08~0.3 mg/m3 or 0.06~0.24ppm; Red: >0.3 mg/m3 or >0.24ppm Temperature Specification Display Resolution: 0.1°C (0.1°F) Response Time: 5~30 seconds RH Specification Display Resolution: 1%RH Response time: <8 seconds for 63% of step change
Most Helpful Customer Reviews
I read a lot of reviews before choosing this handheld, and decided to go for it and return it if it didn't work. It is easy to use and the battery lasts a long time (multiple days). So does it work? Yes, but the readings seem to be higher than your actual formaldehyde levels. I sort of freaked out at the first readings -- like .7 or .9 ppms until I got accustomed to it. It works by diffusion and is very (cross) sensitive to alcohols (cooking chicken with white wine, spraying lysol in a room, or a closed cabinet with makeup and hair products) which it does explain in the instruction booklet. Does it sense formaldehyde? I had the opportunity to hold it side-by-side a "real" commercial grade sniffer and mine measured consistently .6 - .8 ppms higher than that one, so I think mine is just picking up more cross-contamination. Once you know that, I think it is reliable to show you your levels in one location relative to another -- and you can also see how levels increase...
I buy it for my new baby room, it work very sensitive, it helped a lot for our health issues. Very long working time after full charger(More than a few days). Mini size and very convenient. It is really a good product. Thanks for such great product.
The number goes up and down erratically in the same place. Looks cheaply made from China. The led lights are not in the correct place.
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