Made by Vitlab of Germany. The tolerances are approx. 20% better than class B according to DIN EN ISO 1042, these flasks are more accurate than equivalent glass flasks. Trace-element contamination from virgin PMP is negligible. Individually ring-marked, per DIN 12664, supplied with standard NS polypropylene stoppers.

Polymethylpentene (PMP [also known as Poly(4-methyl-1-pentene]) is translucent to clear, it can withstand up to 177 deg. C, has excellent chemical resistance and physical properties. TPX is a commonly used trademark by Mitsui Chemicals.

PMP (TPX) and PTFE are equally resistant to concentrated and even hot concentrated hydrofluoric acid. For chemical and physical resistance data see - General Technical Information Sheet

Class A certified are available, please see the products with a 'A' suffix. e.g. LCVV4-0025A.