‘Instant’ cusums from a discrete analyser

‘Instant’ cusums from a discrete analyser

The measurement of erythrocyte transketolase activity on a discrete analyser

Transketolase (TK, EC.2.2.1.1) is a thiamine-dependent enzyme which is widely used for assessing thiamine deficiency. The TK activity in erythrocytes is usually decreased during thiamine deficiency and this activity can be enhanced in vitro by the addition of thiamine pyrophosphate (TPP). The relative increase in enzyme activity, expressed as a percentage, is called the TPP effect. The TK kinet...

The measurement of serum paracetamol using a discrete analyser

An evaluation of the Kem-O-Mat programmable discrete analyser

the n-hexane was sampled. This reduced the carry over almost completely for the more volatile benzene constituent (to 0.2% of the original concentration). There was not sufficient removal of the naphthalene and anthracene however, (to 1.6% and 4.7% respectively). The addition of a rinse vial containing pure mobile phase was then tried. The complete cycle was, therefore: sample; purge; rinse; pu...

Laboratory evaluation of the Greiner G450 discrete analyser

A report of an evaluation of the Greiner G450 selective multichannel analyser is presented. Thirty different single-reagent tests can be carried out in one run at a rate between 200 and 400 tests/h. A double beam photometer allows kinetic and end-point measurements. A Radiometer FLM3 flame photometer has been included for the determination of electrolytes. The G450 analyser demonstrated excelle...