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Garlic powder - reference material for biological components

NegotiableUpdate on 01/21

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

Garlic powder is used for laboratory food testing. Storage conditions: It should be tightly covered immediately after use, sealed in a non transparent composite plastic bag, and placed in a dryer in a cool, dry place away from light. The storage temperature should be<26oC. Precautions for use: If mold is found, stop using.

Product Details

Product Number:GBW10022(GSB-13)
Chinese name: Garlic powder component analysis standard substance
Product specification: 35g/bottle
This series of standard substances for biological composition analysis includes 10 types such as grains, vegetables, chicken, rice, wheat, corn, soybeans, tea, scallops, prawns, etc. They can be used as quantitative and quality monitoring standards for biological sample composition analysis in agricultural environmental geochemical investigation and evaluation, as well as food hygiene and safety evaluation.

Uniformity and stability:

The standard value is defined as having no less than 6 sets of general data, accurate methods with different principles for testing, and good performance; Data with few (but not less than 3 sets) or accuracy that does not meet the requirements are used as reference values, represented by data in parentheses. The standard value uncertainty (U) is estimated using the formula=, where u_a，u_bThe standard uncertainties are Class A and Class B, respectively,tfortThe distribution takes a t-value with 95% confidence and n-1 degrees of freedom. s and n are the standard deviation and number of data sets of the test data. R and m are the range of the average value of the analysis method and the number of methods involved in the statistics (n ≥ 2). For a single test method, s is used as an estimate of uncertainty. Randomly select 24 sub samples and use XRF compression method to make duplicate samples. Analyze about 8 elements with different properties and contents. Under good testing accuracy, the difference test results show that the uniformity meets the requirements. The sample was tested four times within one year for various elements with different properties and contents, indicating stability. Regular follow-up testing will continue in the future.

Storage conditions: After use, it should be immediately covered tightly, sealed in a non transparent composite plastic bag, and placed in a dryer in a cool, dry place away from light. The storage room temperature should be<26oC.

Precautions for use: If mold is found, stop using.

Characteristic form: Solid state

Matrix:主要分析方法： ICP-MS、ICP-AES、INAA、XRF、AFS、GFAAS、COL、VOL、POL、IC、IES、AES

Unit of uncertainty for component standard values

Ag (5) (10-9)

Al 0.021 0.002 (10-2)

As 0.31 0.04 (10-6)

B 7.5 0.9 (10-6)

Ba 4.1 0.3 (10-6)

Be 4.4 1.1 (10-9)

Bi 13 1 (10-9)

Ca 0.081 0.008 (10-2)

Cd 0.062 0.003 (10-9)

Ce 0.16 0.03 (10-6)

Cl 0.075 0.006 (10-2)

Co 0.056 0.008 (10-6)

Cr 0.30 0.07 (10-6)

Cs 25 2 (10-6)

Cu 4.6 0.4 (10-6)

Dy 8.9 1.1 (10-9)

Er 4.2 0.8 (10-9)

Eu 3.2 0.8 (10-9)

F (35) (10-6)

Fe 205 18 (10-6)

Gd 11.4 1.5 (10-9)

Ge (12) (10-9)

Hf (0.04) (10-6)

Hg 4.0 1.5 (10-9)

Ho 1.6 0.3 (10-9)

I 0.57 0.09 (10-6)

K 1.14 0.05 (10-2)

La 0.092 0.018 (10-6)

Li 0.13 0.02 (10-6)

Lu 0.58 0.15 (10-6)

Mg 0.105 0.004 (10-2)

Mn 13.4 0.8 (10-6)

Mo 0.21 0.02 (10-6)

N 3.22 0.17 (10-2)

Na 0.095 0.013 (10-2)

Nd 0.066 0.013 (10-6)

Ni 0.92 0.11 (10-6)

Pb 0.72 0.09 (10-6)

Pr 17 2 (10-9)

Rb 6.5 0.2 (10-6)

S 1.01 0.05 (10-2)

Sb 0.023 0.005 (10-6)

Sc 0.021 0.003 (10-2)

Se 0.39 0.07 (10-6)

Si (0.08) (10-2)

Sm 13 3 (10-9)

Sn (0.07) (10-6）

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Certification institution: China Institute of Geology, Geophysics, and Geochemistry Exploration

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