The Inverted Cup Test: Gel Strength You Can Measure Without a Rheometer
A 200 ml cup, a piece of mesh and ten minutes gives a repeatable gel strength number. How to run it, read the drip weight, and where a firm gel still fails.
The Gel Column Test: Thirty Minutes That Tell You What a Bulk Bag Will Do
An incoming inspector has 20 minutes per truck and a Certificate of Analysis that says 310 g/g. She also has a 250 ml measuring cylinder, a stopwatch and a marker pen. What she can find out in half an hour is whether that bag will behave like the last one: how fast the water front climbs, where it s…
Fines Below 150 Microns: The Hidden Tonnage in Every Bulk Bag You Unload
A hygiene convertor in Southeast Asia opened a 1,000 kg bulk bag and found 38 kg of it would pass a 150 micron screen. Nobody had asked for a fines limit in the purchase order, because nobody had thought fines were a specification. Six months later the converting line was running 4 percent slower, t…
