Reserved for the most sensitive processes, such as High Performance Liquid Chromatography (HPLC); very low levels of biological and ionic contaminants.
ASTM Type 2
For reagent and buffer mixtures and preparation of media for bacterial and cell culture; low ionic contaminants that interfere buffering capacity of solutions; less stringent thresholds for organic contamination
ASTM Type 3
For glassware rinsing, heating baths, filling autoclaves or pre-feeding type 1 lab systems
Analytical Balances are ideal for use in sensitive procedures, such as weighing laboratory reagents; built-in draft shield and readability below microgram levels.
Micro Balances with readability from 0.001 to 0.005 include a glass draft shield. Modular units are available with optional apps and accessories.
Precision balances have microgram readability and higher weighing capacities compared to analytical balances. Models are excellent for weighing bulk powders for procedures such as media preparation.
Semi-Micro Balances with a readability of 0.01 include an ionizing draft shield that easily adapts to different applications with optional apps and accessories. Model includes an integrated ionizer to eliminate electrostatic charges.
Modular Ultra-Micro Micro Balance with a readability of 0.0001 and a weighing capacity of 2.1 g includes a glass draft shield.
Highly accurate air displacement pipettes create a partial vacuum between the liquid and the piston by dispensing the same volume of air as indicated on the setting. This method improves accuracy and prevents cross-contamination.
Positive displacement pipetting puts the piston in direct contact with the liquid ideal for viscous, volatile or dense liquids.