SPE purification workflow for pesticide residue testing in honey

SPE Extraction of Pesticide Residues from Honey Samples

Importance of Monitoring Pesticides in Honey Honey represents a unique challenge in food safety monitoring due to its complex composition and the potential for pesticide contamination from agricultural practices. As a natural product consumed worldwide, honey serves as an important indicator of environmental quality and agricultural chemical usage. Pesticide residues in honey can originate from […]

SPE Extraction of Pesticide Residues from Honey Samples Read More »

Vacuum gauge display showing stable pressure in production line

Why Accurate Vacuum Monitoring Reduces Scrap Rates

Correlation Between Pressure Fluctuation and Defects In vacuum-dependent manufacturing processes—such as thin-film deposition, vacuum heat treatment, brazing, and semiconductor packaging—pressure stability directly determines product quality. Even brief fluctuations as small as 10–20 % can alter mean free paths, gas scattering, and surface reaction rates, producing defects that lead to scrap. For example, in magnetron sputtering,

Why Accurate Vacuum Monitoring Reduces Scrap Rates Read More »

SPE purification workflow used for urine drug metabolite analysis

SPE Cleanup for Detecting Illicit Drug Metabolites in Urine

Urine Matrix Challenges in Forensic Toxicology Urine presents unique analytical challenges in forensic toxicology that demand sophisticated sample preparation techniques. As the most common biological matrix tested in racing and human forensic applications, urine contains a complex mixture of endogenous compounds including urea, creatinine, uric acid, electrolytes, and various metabolites that can interfere with drug

SPE Cleanup for Detecting Illicit Drug Metabolites in Urine Read More »

Vacuum gauge mounted on automotive vacuum test bench

Vacuum Gauge Applications in Automotive Component Testing

Vacuum Use in Brake System Testing Automotive brake system testing relies heavily on vacuum technology to validate critical safety components such as brake boosters, vacuum pumps, hoses, and valves. Modern vehicle brake systems use engine or electric vacuum to amplify pedal force through a booster assembly. During design validation, production qualification, and end-of-line testing, manufacturers

Vacuum Gauge Applications in Automotive Component Testing Read More »

Cold cathode vacuum gauge installed on clean chamber

Extending Cold Cathode Gauge Service Life

Extending Cold Cathode Gauge Service Life Cold cathode vacuum gauges like Poseidon Scientific’s VG-SM225 deliver reliable high-vacuum measurement from 10−3 to 10−7 Torr in laboratory, analytical, and thin-film applications. Their Penning-discharge design eliminates hot filaments, reduces outgassing, and supports compact integration. Yet even the most robust cold cathode gauge has a finite service life that

Extending Cold Cathode Gauge Service Life Read More »

SPE cleanup workflow for tea polyphenol analysis

SPE Sample Preparation for Polyphenol Profiling in Tea

Chemical Diversity of Tea Polyphenols Tea polyphenols represent one of the most chemically diverse classes of natural compounds found in food products. These bioactive molecules include catechins (epigallocatechin gallate, epicatechin gallate, epigallocatechin, and epicatechin), flavonols (quercetin, kaempferol, myricetin), flavones, phenolic acids, and theaflavins. The structural complexity arises from variations in hydroxylation patterns, glycosylation, and polymerization

SPE Sample Preparation for Polyphenol Profiling in Tea Read More »

SPE extraction of antibiotic metabolites from wastewater samples

SPE Extraction of Antibiotic Metabolites in Wastewater Effluent

Environmental Persistence of Antibiotic Metabolites Antibiotic metabolites represent a significant environmental concern due to their persistence in wastewater effluent systems. Unlike parent compounds, these metabolites often exhibit modified chemical structures that can maintain biological activity while resisting conventional wastewater treatment processes. The environmental persistence of these compounds creates selective pressure for antimicrobial resistance development in

SPE Extraction of Antibiotic Metabolites in Wastewater Effluent Read More »

PLC screen displaying vacuum pressure scaling setup

Vacuum Gauge Signal Scaling for Different Pressure Units

Scaling Raw Signal into mbar Vacuum gauge analog and digital outputs rarely deliver pressure directly in engineering units. Instead, they provide a raw voltage (typically 0–10 V) or a serial data packet that must be scaled to a meaningful pressure value. For laboratory, semiconductor, and thin-film applications, millibar (mbar) is the preferred unit in many

Vacuum Gauge Signal Scaling for Different Pressure Units Read More »

SPE purification of energy drink samples before LC-MS testing

SPE Cleanup for LC-MS Analysis of Energy Drink Ingredients

Chemical Composition of Energy Drinks Energy drinks represent a complex analytical matrix containing both active ingredients and numerous excipients. The primary active compounds include caffeine (a xanthine alkaloid), taurine (2-aminoethanesulfonic acid), and various B-group vitamins (notably B3, B6, and B12). Caffeine, being a weakly basic to neutral molecule, presents unique extraction challenges as its acid

SPE Cleanup for LC-MS Analysis of Energy Drink Ingredients Read More »

Compact vacuum gauge installed on laboratory vacuum pump

How to Select Vacuum Gauges for Laboratory Vacuum Pumps

Lab Pump Applications Overview Laboratory vacuum pumps power a wide range of scientific and research workflows, from simple rotary vane pumps used for filtration and degassing to sophisticated turbomolecular and cryopump systems supporting analytical instruments. In university labs, contract research organizations, and R&D facilities, these pumps enable critical processes such as sample preparation for mass

How to Select Vacuum Gauges for Laboratory Vacuum Pumps Read More »

Shopping Cart
Poseidon Scientific
Privacy Overview

This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.