A complete instrumentation set for HDPE water storage tank manufacturers — resin MFI, tensile, ESCR, carbon black content & dispersion, OIT, density and opacity to IS 12701 / IS 4984.
HDPE water storage tanks stand in Indian sunlight for decades. Failure is almost always a slow-cracking or UV-degradation issue in the resin — not a moulding fault. IS 12701 (the Indian standard for rotomoulded HDPE tanks) and IS 4984 (HDPE resin for pipes) between them prescribe the mechanical, thermal and UV-durability tests.
This solution supplies the full IS-compliant test suite — carbon black content and dispersion, OIT, ESCR, tensile, opacity and MFI — from a single Indian manufacturer that already supplies most Indian tank producers.
Each card links to the machine that runs the test.
Mandatory 2.0–2.5% carbon black for UV protection of HDPE tanks — pyrolysis apparatus.
Even dispersion rating — agglomerates leave UV-weak spots and initiate cracking.
Oxidation induction time — the retained antioxidant / stabiliser life indicator.
Environmental stress cracking resistance — long-life predictor for HDPE tanks.
Verify HDPE resin MFI batch by batch — critical for rotomoulding processability.
Tensile strength and elongation of tank-wall samples for structural verification.
Verify resin grade and detect regrind or filler.
Confirm tank wall is opaque enough to prevent algal growth — an IS-mandated check.
HDPE water tank tests follow IS 12701 (tanks) and IS 4984 (HDPE resin), plus ASTM D1603 (carbon black), ASTM D1693 (ESCR), ISO 11357 / ASTM D3895 (OIT), ASTM D1238 / ISO 1133 (MFI), ASTM D638 / ISO 527 (tensile), ASTM D792 / ISO 1183 (density) and IS 4985 / IS 12235 (opacity). Every instrument is calibration-certified.
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