Santacary HCHO Index Monitor, Formaldehyde (Oxymethylene) Temperature and Humidity Air Quality Pocket Indicator [FH20] Accurate AQI Datalogger Indoor DetectorTwo-year Warranty
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Santacary HCHO Index Monitor, Formaldehyde (Oxymethylene) Temperature and Humidity Air Quality Pocket Indicator [FH20] Accurate AQI Datalogger Indoor DetectorTwo-year Warranty

3.0/5
Product ID: 14401637
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Description

  • 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
  • ›See more product details

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

Reviews

3.0

All from verified purchases

A**R

Sensitive to cross contamination but consistent readings once you know how to adjust them.

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 with increasing temperature and humidity. I did get it to register close to 0 ppm outside on a very cool breezy (~62 degree) morning.

W**K

Works as advertised.

Very useful for the price.

L**H

The number goes up and down erratically in the same ...

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.

T**C

Four Stars

Works well and very compact.

D**E

One Star

worked fine for a week or so, then would not charge.

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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Currently out of stock

Belgiumstore

Sorry, this item from our Belgium store is out of stock. We're restocking soon—check back or contact support for similar products.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Santacary Hcho Index Monitor Formaldehyde Oxymethylene Temperature And Humidity Air | Desertcart Belgium