hirschmann Measuring Cylinders

Description Vitreous Silica is the glassing modification of silcon dioxide with a purity of 99.9% in the transparent form and is called fused silica. All our silica ware products are made out of fused silica. Fused silica is completely unaffected by acids such as sulpuric, nitric and hydrochloric, however, it can be affected by hdrofluric acid and at high temperatures also by phosphoric acid. Hot alkalies and certain metallic oxides also react on fused silica. Fused silica is boron free They are of very low expansion and hence have excellent dimensional stability and thermal shock resistance Technical Specifications: - Electrical resistivity - (at 350°C) 7 x 107 ohm cm - Average co-efficient of expansion - 5.5 x 10-7 / °C - Softening point - 1685° C - Annealing point - 1200° C - Operating temperature (continuous) - 1050° C - Operating temperature (intermittent) - 1350° C Working temperature - 1950° C Strain point - 1120° C

Description CHEMICAL PROPERTIES- Fused Silica is neutral to all halogens and acids irrespective of temperature or concentration except hydro-fluoric and phosphoric acid. Phosphoric acid affects fused silica only at high temperatures and can be concentrated successfully in silica vessels. For all ordinary purposes they can be used with phosphoric acid. Sulphuric, Nitric and Hydrochloric acids or any mixture of these acids, do not affect Fused Silica even at temperatures upto 1000ºC. Cleaning of Silica ware regularly can ensure good service.

Description Pipettes, Graduated, Clear Glass, Short - Line, Graduated to Tip, Amber Stain Graduation, (Serological type), Class ‘B’, RIVIERA Brand Pipette, Transfer, Volumetric, Accuracy as per Class ‘A’, Made from Heat Resistant, IS 1117: 1975 Low Expansion Borosilicate Glass, with Individual Certificate of Performance, RIVIERA

Description RIVIERA Weighing Bottle, with I/C Stopper with printed graduation mark and ergonomic polyethylene stopper Manufactured from borosilicate glass 3.3 Close-fitting lid prevents any sample loss during transport after weighing Also available in squat form