Posts by Rachel Kohn
Low-Temperature and Ultra-Low Temperature Freezers for Covid-19 Vaccines
A question posed in the September 5-6, 2020, Wall Street Journal asks “do we have enough freezers?” This relates to the unusually cold storage temperatures – as low as -80⁰C – recommended by certain producers of Covid-19 vaccine candidates in Phase 3 clinical trials. Proper vaccine storage temperatures have always been a concern as evidenced…
How a HPLC Digital Flow Meter Works
How to Specify a Compact Medical Refrigerator
How to Select an Under Counter Lab Freezer
How to Check Pump System Accuracy for HPLC Analysis
Pump system accuracy is crucial for equipment used to conduct high performance liquid chromatography (HPLC) analysis in the pharmaceutical and other industries subject to regulatory oversight by the FDA and similar authorities. Among functions performed by HPLC are included checks for purity, monitoring changes in pharmaceutical intermediates during chemical synthesis scale-up, stability and dissolution tests,…
Ideal Moisture Balance for QC in Molding Plastics
Selection Tips for Moisture Analyzers
Ensure Hygiene with a Veterinary Ultrasonic Cleaner
How to Achieve Precision Weighing with an Analytical Balance
Ultrasonic Cleaner Boosts Efficiency
In my shop selecting the correct ultrasonic frequency to employ when operating the ultrasonic cleaner depends on the items being cleaned and what is being removed. Coarse cleaning to remove heavy contaminants is generally best performed at lower frequencies such as 37 kHz because it delivers stronger cavitation action.