Formaldemeter htV-m is a handheld, direct-reading portable instrument that offers a convenient way to monitor levels of airborne formaldehyde. The htV-m can precisely measure formaldehyde concentrations in parts per million (ppm) and mg/m3 over a wide range of temperature and humidity conditions. Fast and easy to use, it employs a proven sensor technology that provides an immediate indication of formaldehyde levels. The built-in memory and real-time clock enables the instrument to log data for up to one month of continuous stand-alone monitoring. Additionally, a PC can automate the sampling and log data at specific times by a direct or wireless connection.

Product Highlights

  • Rapid response time
  • Capable of up to 1 month of continuous monitoring
  • Small, light-weight, hand-held instrument
  • Built-in sampling pump
  • Monitors and displays temperature and relative humidity
  • Connects directly to PC for downloading data
  • Simple to calibrate



Unit of Measure

Range (CO)

N/A See Spec Sheet ppm


N/A See Spec Sheet

Power Requirements

N/A PP3 9v alkaline battery or 9-15v DC supply


N/A 1.65 lbs

General Description


Sensor: Electrochemical


Calibration: In-field formaldehyde calibration standard


Display: 4-digit LCD


Sampling method: 10ml sample of air taken by internal pump


Sampling frequency: 1 minute in normal IAQ conditions


Response Time: 60 seconds in high accuracy mode, approx. 8 seconds in low accuracy


Mechanical: 150 x 80 x 34mm ABS plastic case. Padded accessory case 266 x 230 x 50mm


Weight: 270g with 9v PP3 battery. Total kit weighs 750g


Power: PP3 9v alkaline battery or 9-15v DC supply