Cereals and feedstuffs for import and export—Method for the determination of moisture and volatile matter

This standard specifies the inspection method for moisture and volatiles in imported and exported grains and feeds. This standard applies to the inspection of moisture and volatiles in imported and exported grains and feeds. SN/T 0800.19-1999 Inspection method for moisture and volatiles in imported and exported grains and feeds SN/T0800.19-1999 Standard download decompression password: www.bzxz.net
This standard specifies the inspection method for moisture and volatiles in imported and exported grains and feeds. This standard applies to the inspection of moisture and volatiles in imported and exported grains and feeds.

Inspection methods for moisture and volatile matter in imported and exported grain and feeds This standard shall come into effect on the date of implementation of this standard. 1. Scope The standard stipulates the drafting and expression rules for the selection and replacement of 2. Imported grain and feed quality inspection and quarantine bureau and Shanghai Municipal Commission of Inspection and Quarantine of the State Council, and the inspection methods for moisture and volatile matter in imported grain and feeds shall be proposed and issued by the State Administration of Quality Supervision, Inspection and Quarantine of the State Council. This standard is applicable to the inspection of moisture and volatiles of imported and exported grains and feeds. 2 Referenced standards include the following: GB/T 8170-1987 Rules for Rounding off of Numerical Values, SH/T 0800.1-1999 Inspection of Import and Export Grains, Oils and Feeds. 3 Definitions: This standard adopts the definitions of SK T OTge. 4 Extraction and preparation This standard is in accordance with the method specified in S-080.1. 5.1.3 Weighing blood: Aluminum, with cover. Diameter (50~0) mm, height (15~25) mm. Each blood and blood cover are numbered. 1.4 Glass desiccator: Contains effective desiccant. Suffering from sugar agent; the surface of the active group 9 urine most system urinary volatile oxygen type through etc. cyanine pulp rate is automatically controlled temperature stable at soil 2 ℃ C or above
6 clean,
, soft brush, horn and, before Ding www.bzxz.net
the number and relative fineness of sheep preparation
5.2 Sample
removed
rice, wheat
general (silk)
, feed, decoration
sugar, that seed box and other physical properties can be scientific
5.3 Sample dosage
style qualified quantity according to fried
.4 Benchmark method
internal distribution
5. 4. 2 105~℃
good food moisture and volatile!
Where: n
Percentage of sample moisture and volatile content
Mass of blood box
Mass of sample and blood box before drying, g
Mass of sample and blood box after drying, g
Contract specification test
5.5 Constant temperature and timed drying
Preparation quantity (
Table 2 Sample quantity calculation table
The method is a common method for determining the moisture content of grains and feeds. Operation steps
Newly reduce the sample preparation coarseness
Omm kitchen hole by
Weigh. This sequence
Weigh twice is the same as
Constant weight method.
Use the required amount to obtain the sample, the protein content and the density of sugar increase, 10 C point; hold the temperature is too strict and produce the result of the sample + sugar over half of the pull. And temperature plate
result calculation
5.6 double drying:
grain moisture is above 18%, the feed
weight method result calculation is the same
above 14, use two press drying
the last out in the replacement and increase the sample 0 into the straight but 10 Note: If the moisture content of the grain sample is very high and it is still difficult to dry after the specified time of pre-drying, the pre-drying time can be appropriately increased. Drying: Powder the granular sample after the first drying according to 5.2, and then weigh an appropriate amount of powdered sample according to 5.3 and 5.5. After drying at a fixed temperature and time, it can be used for the second drying. Calculation of results: The volatile content of the sample after two dryings is calculated according to the formula: Where: M, the percentage of moisture and volatile content of the sample, g: 1, the mass of the sample before the first drying, g: 2, the mass of the sample after the first drying, g: s, the mass of the sample before the second drying, g: The allowable difference of the test results is the same as that specified in 5.4.2. 5.7 Other methods: The operating method shall be in accordance with the instrument specification.
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