EC methods, GSM, loadability, and the mistakes we watch for — written for buyers who check our work.
0–15 mm and 10–25 mm do different jobs in a mix. Dust and salt travel with the fraction.
The same pith lot can pass one lab and fail another if the extract ratio is unnamed.
Coir mat GSM is one row. Stitch, fibre length, and the log at the toe do the work a certificate cannot.
Slope toe, channel, and shoreline want different geometry. A 40'HC packs the diameter you specified.
Tomato, strawberry, and cucumber bags fail for different hydraulic reasons. Name the mix before the sleeve.
Horticulture and industrial buyers fail lots for opposite reasons if metres per kilogram are unnamed.
A wash removes salt. A buffer exchanges cations. The COA has to say which one you bought.