Assorted pack of one-hole stoppers containing the following: each of No's. 7, 8, 9, 10, 11, 13, 15, 17, 19, 21, 23. Two each of No's. 25, 27, 29, 31, 33, and 35.
With turnover flange and serrations to grip the inside of narrow neck containers. Supplied in pack of 10. Can be used as resealable stoppers for Gas Syringe ST14858. For video demonstration, visit timstar.co/SubaSealSyringe
With turnover flange and serrations to grip the inside of narrow neck containers. Supplied in pack of 10. Can be used as resealable stoppers for Gas Syringe ST14858. For video demonstration, visit timstar.co/SubaSealSyringe
Cobalt chloride free humidity indicator paper does not contain carcinogenic or toxic material. There is a clear colour change from yellow-green to pale to colourless at approximately 2% Humidity indicator paper traditionally contains cobalt chloride which is known for it’s toxic and carcinogenic properties Handling these indicator papers puts end users and those involved with packing them at risk This non-toxic moisture indicator paper disqualifies this risk being safer to use
Cobalt Chloride Test Paper can quickly and economically measure the presence of relative humidity in the atmosphere. The paper is directly exposed to the atmosphere and turns from blue to pink upon contact with relative humidity greater than 2%. These papers are traditionally used in school experiments. Supplied in books of 20 strips.