Description
Detect low-level formaldehyde (HCHO) with the NextTeq NX157L detector tube, offering a dual measuring range of 0.1–4.0 ppm (5 pump strokes) or 0.05–2.0 ppm (10 pump strokes) with a detectable limit as low as 0.03 ppm. This tube reacts with formaldehyde to shift from yellowish orange to pink, with results read directly off the printed scale calibrated for five pump strokes. With a TLV-TWA of 0.1 ppm and a 1-year shelf life when stored refrigerated, it's a precise solution for monitoring trace-level formaldehyde exposure.