How is the spiral plater checked to ensure it is dispensing the correct volume?
WASP – GRAVIMETRIC ANALYSIS INTRODUCTION The volumes to be dispensed by the WASP instrument are factory set, however, many laboratories will want to carry out regular checks with respect to the volume dispensed. The gravimetric determination of small volumes requires an analytical balance and adherence to strict procedures to ensure reproducibility and accuracy. For further information on this method refer to British Standard BS 7653, Part 4, 1993; Piston and/or plunger operated volumetric apparatus. Specification for conditions of test, safety and supply. All equipment, materials, test water and the WASP must be allowed to equilibrate for two hours prior to use in the environment where testing will take place. PROCEDURE 1. Turn on both the vacuum source and WASP. 2. Place a clean, dry, sealable container in which to collect the sample onto an Analytical balance and press the “Tare” key so that the display reads zero. 3 Set the WASP in the following mode:- Auto/Valve/Log/50µl Open the
Related Questions
- As the majority of pipettes are variable volume how can you ensure that a pipette is linear across it’s specification range by testing only one volume?
- I am a tax-exempt customer. How do I ensure that I am not charged tax on purchases I make through the App Store Volume Purchase Program?
- How is the spiral plater checked to ensure it is dispensing the correct volume?
