Iwa 37mm, 8-µm pore size, pk/100 225-1939 Accessories Calibration Adapter for Disposable PPI 225-389 Forceps, stainless steel, with non-serrated flat tips 225-8371 Filter Supports for User-loaded PPI Sampler, required for sampling Select
A uniform metre rule balances horizontally on a knife edge placed at the 58 cm mark when a weight of 20 gf is suspended from one end. i Draw a diagram of