How to choose a dye penetrant system
The surface you test, the size of crack you must find and whether you rinse with water or remove with solvent decide which dye penetrant system you need. This guide explains the process, the penetrant sensitivity levels and the developers, with recommendations and prices.
How to choose a borescope or videoscope
The access opening, how far you must reach and whether you need to look around a bend decide which borescope or videoscope suits. This guide compares fibre-optic, video and articulating units, with recommendations and prices.
How to choose a flow meter
The liquid, the pipe it runs in and whether you need a portable check or permanent monitoring decide which flow meter suits. This guide compares clamp-on, insertion, Doppler, electromagnetic and oval gear meters, explains what the meter needs to know about the pipe, and recommends instruments with prices.
How to choose a temperature and humidity meter
Whether you need a spot reading, a dew point check, a non-contact surface temperature or a logged record over time decides which instrument you need. This guide explains the options, the calibration and logging questions, and recommended instruments with prices.