A Simple Device for Gravimetric Sampling

A Simple Device for Gravimetric Sampling.

In view of the increased importance attached to the gravimetric sampling of airborne dust in mines and other working places, it was recently decided to start regular gravimetric sampling in the experimental animal dusting rooms in this Unit. As no suitable sampling instrument was available, a Hexhlet dust sampler was modified by fitting it with a probe in place of the elutriator. This instrumen...

A simple novel device for air sampling by electrokinetic capture

BACKGROUND A variety of different sampling devices are currently available to acquire air samples for the study of the microbiome of the air. All have a degree of technical complexity that limits deployment. Here, we evaluate the use of a novel device, which has no technical complexity and is easily deployable. RESULTS An air-cleaning device powered by electrokinetic propulsion has been adapt...

A simple gravimetric method for estimation of plasma fibrinogen.

The study was undertaken to evaluate a new method of estimating plasma fibrinogen levels, gravimetrically using calcium chloride in albino rats. The results were compared with the standard method in which thrombin was used as clotting agent and were found to be statistically not significant. Advantages of using calcium chloride instead of thrombin have been discussed.

A Simple Gravimetric Method for the Determination of Urinary Potassium

A simple gravimetric technique for estimating honeydew or nectar production

We describe a simple gravimetric technique for measuring the standing crop or production of carbohydrate-rich solutions such as honeydew or nectar. Simulated honeydew was sampled by absorbing droplets of solutions of known concentration and volume with dried and weighed pieces of filter paper. The change in mass of the paper after redrying provides an estimate of the total solution carbohydrate...