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write-on surfaces and clear lid enables easy tube location
Binder free glass micro fiber filters are suitable for analytical and gravimetric analyses
including possible downtimes in case of mains power failures
even in the field
500 g HEPES, Powder 03011-47 write-on surfaces and clear lidHEPES (N 2 hydroxyethylpiperazine N 2 ethanesulphonic acid) provides an alternative to the use of bicarbonate for buffering because it does not require elevated levels of CO2. Unlike the low pKa of bicarbonate, HEPES has a pKa of 7. 66 making it a much stronger buffer in the pH 7. 2 7. 6 range than bicarbonate buffer. Potential disadvantages of HEPES include toxicity over 100 mM and lack of nutritive value to the cell.
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