Fertilizers mineral

GOST 8.613-2012
- heater in a ceramic shell - infrared thermogravimetric moisture meters MA-45,
10
Mami "Sartorius Weighing Technology GmbH" (Germany) and "Mettler Toledo International" (Switzerland):
- halogen heater - moisture analyzer HR83, HG63 manufactured by Mettler Toledo International.
- heater in a metal shell - heating element - thermogravimetric analyzers MA-30, MA-40
Notes 1 Entries
in the column "Criteria for stopping drying" of the modes: -
automatic - drying to constant weight, the mode indicated in the drying programs of moisture meters "AUTO"; - 15 min,
20 min,
30 min - drying for the specified time, the mode indicated in the drying programs of the moisture meters "Time". 2
Examples of various infrared
emitters used in IKTG moisture meters manufactured by
manufactured by Sartorius Weighing Technology GmbH;
MA-150 manufactured by Sartorius Weighing Technology GmbH;
End of table A.1
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Calibration of a moisture meter based on the method of near infrared spectroscopy
GOST 8.613-2012
St. 4.5 to 6.0 incl.
(B.1)
PG1
Appendix B
(recommended)
St. 0.50 to 1.00 incl.
St. 6.0 to 12.0 incl.
Note - The introduction of water into a mineral fertilizer and intermediate product can lead to a non-uniform distribution of water
over the volume of the prepared sample. In such cases, when preparing NG, it is recommended to use a climate chamber with a set
mode of 30 °C and 70% relative air humidity.
PG2
Up to 1.0 incl.
St. 0.05 to 0.25 incl.
The obtained samples are thoroughly mixed, placed in sealed containers and kept for
Moisture mass fraction subrange, %
PG2
St. 6.0 to 8.0 incl.
where /?71 is the initial mass of mineral fertilizer, g
PG1