<p>&nbsp;</p> <p>This listing is for 2 formaldehyde test kits, one box contains one test kit.</p> <p>THE PACKAGING & INSTRUCTIONS ARE IN CHINESE, <br>but the process is simple and straightforward, <br>and ENGLISH INSTRUCTIONS ARE INCLUDED IN THE LISTING PICTURES.</p> <p>The PICTURES OF ENGLISH PACKAGING VERSION box are only included for reference.</p> <p>This improved version has 30 round colour comparisons which compare to a higher level of formaldehyde. Not 20 squares as in the pictures.</p> <p>Formaldehyde is a naturally occurring organic compound. Formaldehyde exposure may cause a variety of symptoms and adverse health effects, such as eye, nose, throat, and skin irritation, coughing, wheezing, and allergic reactions.</p> <p>SIMPLE, FAST and ECONOMIC way to determine whether Formaldehyde Gas (HCHO) is present in your home. <br>This test kit is suitable for all living areas up to 25 square meters. One kit per one room/item, if you would like to inspect your entire house we recommend buying the same amount as the room quantity.</p> <p>Keep the test area closed before testing. Eg: close the room for about 8 hours & turn off all ventilation etc before testing. You will get results of what the formaldehyde concentration is during 8 hours sleep with all windows closed.</p> <p>Four easy steps with English instructions available. <br>Test gives results in 30-50 minutes time.</p> <p>This test will provide only visual results of the concentration of Formaldehyde in the room and should only be used for home or office environment & not compared to industrial equipment.</p> <p>Store the test kit prior use in a dry and dark place.</p>