Category Archives: General
Sample valve symbol
This black and white sample valve symbol can represent a sampling valve or sampling system for sampling hazardous product from a pipeline for instance on your P&ID. Firstly, the white centre of the symbol represents the pipeline or the tank … [Continue Reading]
Chemical testing systems
Chemical testing systems then… well, not exactly. We can get the chemical sample into the container but we can’t test it. That’s for your lab to do. They do the clever bit. We just make sure the chemical sample is … [Continue Reading]
Manual sampling equipment
Useful range of manual sampling equipment, tools and accessories from Dopak for open sampling of liquids, semi solid and solid media. Sampling manually from open volumes of water, drums or tanks is sometimes necessary for spot sampling. Its cost effective, … [Continue Reading]
Dopak Pre-Engineered Sample Cylinder
Dopak Pre-Engineered Sample Cylinder products available ex stock! Cylinders are suited for sample collection, safe transport and chromatographic lab analysis. The sample cylinders are available in different volumes. Cylinders are used for samples with high vapour phase liquids, gas and … [Continue Reading]
Working from home
Derwent James Ltd is a small business managed by me Neil Finney from my home office here in Derby. I also worked from home prior to setting up DJL so in total I’ve probably worked from home for nearly 20 … [Continue Reading]
Derwent James – advice & availability
Derwent James Ltd remain available to provide our usual high level of process safety consultation and technical support, so if your site has imposed travel or access restrictions then do remember that we continue to offer this support remotely via … [Continue Reading]
Dopak Liquid & Gas Sampling Solutions
Dopak samplers are manufactured in the Netherlands by sampling specialists Dovianus based near Rotterdam. Established in 1926 they are the undoubted leaders in the design, manufacture and supply of closed loop chemical sampling systems. Represented in the UK by ourselves … [Continue Reading]
Derwent James Ltd – Autumn 2019 update
There’s always things going on at Derwent James Ltd. This Autumn we have new product initiatives, new supplier agreements and a company celebration. We have an opportunity to deliver Dopak sampling systems in 4 weeks from order! A new agreement … [Continue Reading]
