Author Archive

Time to make lemonade with your Agilent 1100 – HPLC routine maintenance

They say when life hands you lemons, make lemonade. In this case, the COVID-19 pandemic has handed us all more downtime, so let’s talk about one aspect of a testing lab that tends to get overlooked or given less priority than other daily tasks: routine maintenance. The combination of downtime cannabis labs are experiencing due […]

The eVol – Investigating a Liquid Handling Tool to Improve Consistency and Reliability for Calibrations

We’re taking you to Austin, Texas to meet the amazing team at Santé Laboratories for this investigation! This project, led by the analytical team at Sante Laboratories, put the eVol in use and compared it to standard pipetting techniques in the generation of analytical calibration curves. Wait….what? You might be thinking to yourself….What’s an eVol? […]

LC Preventative Maintenance Tips and Tricks – The UltraShield

We’re providing a creative trick for extending guard cartridges and column lifetimes.  This preventative maintenance consumable also acts as a handy troubleshooting tool for problematic back pressure readings.  Drum roll….The UltraShield! https://www.restek.com/pdfs/730-70-003.pdf Normally, the UltraShield is used as an affordable UHPLC pre-column filter and takes the place of a guard column.  These filters have minimal […]

Using Raptor ARC-18 for a Rapid Analysis of Vitamin E Acetate

We recently took a look at combining Vitamin E Acetate and cannabinoids into one method https://blog.restek.com/?p=65679.  This route allows labs to diversify their testing services with a few simple modifications, if using our potency method.  We wanted to give labs another option as well.  Therefore, Justin Steimling went back into the lab and developed a […]

A Quick Look at Vitamin E Acetate Screening on the Raptor ARC-18

  There’s been a lot of focused on vaping crisis and the potential culprit causing dozens of deaths in the United States.  The CDC believes Vitamin E Acetate might be the common linker in these cases.  Vitamin E derived oils are sometimes used as a thickening agent or to dilute THC and increase profits.1 Normally, […]

Custom Solutions for Your Cannabis Testing Needs

If you’re a cannabis testing lab or manufacturer, you’re probably familiar with the current reference standards available on the market.  However, these off the shelf solutions might not fit your workflow needs.  Wouldn’t it be nice to have an option to dial in your ideal references standards to meet your daily testing tasks? Well…Restek’s custom […]

Take Care of Your LC System Investment and Minimize Downtime with Routine Maintenance!

For cannabis QA laboratories and producers, developing methods for HPLC analysis of cannabinoids can be time consuming and resource heavy.  While a lot of focus has been given to sample preparation and optimization of method conditions to maximize sample throughput, one VERY critical factor is often  overlooked: routine LC system maintenance. Keeping a log book […]

Cannabis Residual Solvent Method Development Made Easy with Free Modeling Software

In a typical cannabis testing laboratory, finding time and resources to improve or develop methods can be scarce.  Even in our own applications group, finding time to “quickly” generate data can be a challenge with multiple projects taking place at the same time.  However, there’s a tool that can help make this process more efficient […]