Cryomilling polymer feedstock into microplastic reference particles introduces metal from the milling hardware. We measured it by ICP-MS, traced it to its source, and benchmarked it against published cytotoxicity thresholds. This post reports what we found, including the parts that…
Category: Microplastics
Metal Contamination in Cryomilled Microplastic Reference Particles: Source, Dose, and Cytotoxicity Benchmarking
Posted in Microplastics
Small Particles Task Force: Minimization of Contamination – Current Status (RIT)
The current SPTF team at RIT (Eddingsaas, Hernandez, Routenberg) has been working on blank testing of proposed analysis workflows to extract < 53 µm microplastics from lake water samples, with a goal of ensuring low contamination levels in the workflow…
Elder Lab Staining Airborne Microplastics
Elder Lab Staining Airborne Microplastics Materials Biological Safety Cabinet (BSC) Side arm flask, 150-1000 mL Small pin Fritted glass filter Vacuum and tubing 0.5 µm Sepcon Filters 1.7 mL microcentrifuge tubes Microcentrifuge ddH2O (Barnstead 18 MΩ) 100% isopropanol (IPA) 100%…
Posted in Microplastics, Small Particles Task Force
Elder Lab Operation Clean Glass
Elder Lab Operation Clean Glass Materials Biological Safety Cabinet (BSC) Ultrasonicator P250 T 0.5 or 1 L glass Beaker ddH2O (Barnstead 18 MΩ) 100% isopropanol Alconox Cleaning Solution Glassware, e.g., Petri Dishes Aluminum Foil Oven that can reach 250°C Gloves…
Posted in Microplastics, Small Particles Task Force
Small Particles Task Force: Minimization of Contamination – Best Practices (MMC)
This post is about how I prevent contamination in the lab during experiments and material preparation. Contamination has been an issue in sample preparation despite efforts being made to minimize contamination. Current efforts include wearing cotton lab coats across all…
Posted in Microplastics, Small Particles Task Force
How to Upload a Blog Post
This post is to go over how to post a blog post. This post is written like a protocol, but you can do anything! It is meant to enable live data uploading and review by others. Step 1: Log in…
Posted in Microplastics, Small Particles Task Force
Small Particles Task Force: Observation of Web-Like Structures on Microslit Membranes Following Tween-20–Assisted Microparticle Dispersion
Introduction The LOMP Small Particle Taskforce is focused on developing a reliable and rigorous procedure for analyzing small microplastics in environmental samples. Our primary aim is to ensure that the data we generate accurately reflects the true microplastic population present…
Posted in Microplastics, Small Particles Task Force
Small Particles Task Force: Isopropyl Alcohol Improves Dispersion of <20 µm Particles on Microslit Membranes
Introduction The LOMP Small Particle Taskforce is focused on developing a reliable and rigorous procedure for analyzing small microplastics in environmental samples. Our primary aim is to ensure that the data we generate accurately reflects the true microplastic population present…
Posted in Microplastics, Small Particles Task Force
Small Particles Task Force: Initial Stock Preparation & Staining Workflow
Introduction The LOMP Small Particle Taskforce is focused on developing a reliable and rigorous procedure for analyzing small microplastics in environmental samples. Our primary aim is to ensure that the data we generate accurately reflects the true microplastic population present…
Posted in Microplastics, Small Particles Task Force
Wafer #240701-05 – 1 Micron Microslit
Manufacturer’s Data Delivery Date: 8/25/2025 (picked up and logged by Ahmet Gurcan) Membrane Type: 1 Micron MicroSlit SKU: MSSN400.C-3LX.1-1.0E2 Lot Number: 240701-05 Quantity Received: 250 Manufacturer Test Report: Flow Data Avg in SLPM 1psi: 1.83 2psi: 3.47 4psi: 6.34 15psi:…
Posted in MPHH Blog, Wafer QC Pages
