'Wet' snow vs. 'dry' snow. The size and make up of a snowflake depends on how many ice crystals group together and this will be determined by air temperatures. Snowflakes that fall through dry, cool air will be small, powdery snowflakes that don't stick together.
What is calibration? Calibration is the activity of checking, by comparison with a standard, the accuracy of a measuring instrument of any type. It may also include adjustment of the instrument to bring it into alignment with the standard.
Mass Spec Calibration Solutions, Standards & Solvents. Mass spec calibration solutions are ready-to-use liquid formulations that can quickly calibrate LC-MS instrumentation; validated standards are available for sensitivity assessment, determination of digestion efficiency, or as a control for complex sample analysis.ass Spec Calibration Solutions, Standards & Solvents. Mass spec calibration solutions are ready-to-use liquid formulations that can quickly calibrate LC-MS instrumentation; validated standards are available for sensitivity assessment, determination of digestion efficiency, or as a control for complex sample analysis.