Hobson document
XChem PRO Colour-Change Technology: Gel and Cure Time Easy Guide
A four-page Hobson easy guide to the colour-change technology in XChem PRO vinylester V401 and polyester P201 chemical anchors. It explains what the colours mean, gel time and cure time, and how temperature affects them.
What this covers
- What colour-change does
- Gel time
- Cure time
- Temperature
- Why minimum cure times still apply
- First output
Key things to remember
The essentials from this document in plain words. Check the full document before you rely on a figure.
- XChem PRO V401 (vinylester) and P201 (polyester) change colour to show the chemical is mixed and when it has hardened: properly mixed product starts light blue and turns grey once hardened.
- Gel time is the working time after injecting: insert the stud straight away, because a delay can leave the adhesive too firm. The anchor is not fully load-bearing during gel time.
- Cure time is how long the chemical takes to fully harden so the anchor reaches its design capacity.
- Gel and cure times depend on temperature; check the product label. The label example doubles curing times for wet holes.
- The colour is a visual cue only: you must still follow the minimum cure times on the product label and ETA.
- Discard the first output before use; there is no set number of trigger pulls, but about 10cm is the general recommendation.
Who it helps: Installers using chemical anchors who want to know when the resin is mixed and ready.
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This document is published by Hobson Engineering, who supply this range to us. We show it here in full so you can read it next to the product; the summary above is ours. Read it on this page or download the PDF. For the most current version, ask us.