Quick view Kitagawa America Kitagawa Gas Detector Tubes (10 per box) - Formaldehyde-Indoor Air Quality Compare $150.00 Description Resource Information Each Kitagawa Detector Tube is formulated with high purity reagents that absorb and react with the target gas or vapor being measured. A colorimetric stain is created that is proportional in length to the... Choose Options Choose Options Add to Wish List Add to My Wish List Create New Wish List