Regards
TaChung Huang (黃大忠)
-----Original Message-----I recommend that those of you wishing to evaluate humic products send samples
From: TPiatkowsk@aol.com [mailto:TPiatkowsk@aol.com]
Sent: Monday, January 13, 2003 11:23 PM
To: compost_tea@yahoogroups.com
Subject: Re: RES: RES: [compost_tea] Humic Acid
to A&L Agricultural labs in Modesto California. Have them run the assay for
humic acid and have them run the CDFA assay (California assay). This will
give you a measure of the humic acid content and an indication of its nature
with respect to the size of the molecules.
I would also recommend you request the Salt Index, the levels of S, Na, K and
the pH.
This will provide you with some information to judge the quality of the
material.
Tom Piatkowski
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