Standard
In the analysis work, it often demanded to apply high-quality compound with the exact content being accurate in order to be compared as the detection control or used to calibrate the instrument, the compound is known as standard sample.
Standard refers to the standard substance used for measuring the potency of biological products. When the production department submits to a higher authority for approval of the quality standard of the biological product, they should also provide the standard sample (indicated in unit (μ)) used for measuring the potency of the tested product.
According to different application, the verification products can be divided into biological standard for the testing of biological products, endocrine drugs, antibiotics and other bioassay and chemical standards including:
1 chemical standards used for calibration of the instrument;
2 chemical reference standards used for calibration of the ultraviolet or infrared spectrum of the drugs;
3 control standards used for the purity test of drugs as well as the impurity control or as the control standards for content determination of the medicine.
In the page 67 of the appendix in the People's Republic of China Pharmacopoeia 1990 1st edition, we can find hundreds kinds of standards including bornyl ester acetate, eugenol and panaxadiol as well as 39 kinds of control medicine for the purify inspection of traditional Chinese medicine, impurity control or the content determination.
International standards
This refers to standard sample, with the potency units of the existing international standard sample potency units as baseline, undergoing further calibration of its potency units on the basis of a wide range of international cooperation. Its potency is expressed in 1U. For a certain product, for the establishment of the first international standard sample, the determination of its potency units should be consulted and decided by the Committee of Experts before the announcement. The international standard is a standard reference substance for worldwide preparation of national standards, so that the international standards can achieve unity.
Reagents and standards
All reagents in the food analysis laboratories should be clearly labeled to indicate the following: 1 name; 2 the date of preparation; 3 Signature from the people in charge; 4 if necessary, we need to add content such as safety and validity and so on.
Most food analysis should use standard sample as reference for qualitative and quantitative determination. The standard sample should be classified according to the following classification methods: 1 international standard; 2 national standards; 3 internal standard; 4 other standards.
Receptacle for reference standards should be clearly affixed to the label, to indicate the following: 1 name; 2 standard document number; 3 Opening times; 4 Validity; 5 Signature.
In addition, the laboratory should keep all the necessary specific files for all the necessary reference standards.
Capacity analysis standard solution should also be strictly managed. It should be clearly posted on all the standard solution containers with labels to indicate: 1 name; 2 concentration; 3 formulation date; 4 No of formulated procedures; 5 storage conditions; 6 validity; 7 Signature from people in charge.
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- Chemical Name:
- DIPHENOXYLATE HYDROCHLORIDE - REFERENCE SPECTRUM
- Structure:
- Chemical Name:
- METHYLTHIONINIUM IMPURITY A
- CAS:
- 1231958-32-9
- MF:
- C16H18N3S+
- Chemical Name:
- SEMIVOLATILE BASE/NEUTRALS SURROGATE*SPIKE MIX
- Structure:
- Chemical Name:
- ALPHA-CYANO-4-PHENYLCINNAMIC ACID
- CAS:
- 63472-31-1
- MF:
- C16H11NO2
- Chemical Name:
- BUFFER SOLUTION PH 11.0 (20 C)
- Chemical Name:
- SCRATCH TEST REFERENCE MATERIAL
- Chemical Name:
- CANNED FRESH CHUB
- Chemical Name:
- GAS-OIL (HIGH CONTENT SOLVENT YELLOW 124
- Structure:
- Chemical Name:
- 5-ALLYL-5-(1-METHYLBUTYL)BARBITURIC ACID-RING-13C4
- MF:
- C12H18N2O3
- Chemical Name:
- ANTHRACITE
- Structure:
- Chemical Name:
- BISPHENOL F BIS(3-CHLORO-2-HYDROXYPROPYL) ETHER
- CAS:
- 235741-59-0
- MF:
- C19H22Cl2O4
- Chemical Name:
- AQUANAL(R)-PLUS SPECTRO CUVETTES
- Chemical Name:
- AMINO ACID STANDARD
- Chemical Name:
- SIGMA PSEUDO(TM) NARCOTIC SCENT COCAINE FORMULATION
- Chemical Name:
- HYDRANAL-KETOSOLVER
- Chemical Name:
- Stand for SCOTTY 110 HP Cylinder
- Chemical Name:
- ASTM D4815 Quantitative Calibration Mixture 3
- Chemical Name:
- ASTM D4815 Quantitative Calibration Mixture 4
- Structure:
- Chemical Name:
- 2-Methyl-3-amino-5-nitrobenzamide
- CAS:
- 3572-44-9
- MF:
- C8H9N3O3
- Structure:
- Chemical Name:
- m-Nitrotoluene Standard
- MF:
- C7H7NO2
- Structure:
- Chemical Name:
- S-Metolachlor CGA 357704
- CAS:
- 1217465-10-5
- MF:
- C14H17NO5
- Structure:
- Chemical Name:
- Rosiglitazone Related Compound A (25 mg) ((5Z)-5-{[4-({2-[methyl(2-pyridinyl)amino]ethyl}oxy)phenyl]methylidene}-1,3-thiazolidine-2,4-dione)
- CAS:
- 160596-25-8
- MF:
- C18H17N3O3S
- Structure:
- Chemical Name:
- BaquilopriM-D6
- CAS:
- 1228182-50-0
- MF:
- C17H14D6N6
- Structure:
- Chemical Name:
- Firocoxib-D6
- CAS:
- 1353853-37-8
- MF:
- C17H20O5S
- Structure:
- Chemical Name:
- Robenidine-d8 HCl
- CAS:
- 1173097-77-2
- MF:
- C15H14Cl3N5
- Structure:
- Chemical Name:
- 2-{2-[7-(DiethylaMino)-2-oxo-2H-1-benzopyran-3-yl]ethenyl}-1,3,3-triMethyl-3H-indoliuM iodide
- CAS:
- 1352626-59-5
- MF:
- C26H29IN2O2
- Structure:
- Chemical Name:
- Oxybutynin IMpurity C
- CAS:
- 1199574-70-3
- MF:
- C21H29NO3
- Structure:
- Chemical Name:
- 489-32-7
- CAS:
- 489-32-7
- MF:
- C33H40O15
- Structure:
- Chemical Name:
- OseltaMivir IMpurity A
- CAS:
- 1364932-19-3
- MF:
- C14H24N2O4
- Chemical Name:
- LaMivudine Resolution Mixture C
- Structure:
- Chemical Name:
- Clenpenterol-D11 hydrochloride
- CAS:
- 1325559-11-2
- MF:
- C13H21Cl3N2O
- Structure:
- Chemical Name:
- Miloxacin-D3
- CAS:
- 1228182-43-1
- MF:
- C12H9NO6
- Chemical Name:
- SulfaMonoMethoxine-13C6 hydrate (see Data Sheet)
- CAS:
- 1416768-32-5
- Structure:
- Chemical Name:
- Sulfisoxazole-13C6 (Sulfafurazole-13C6)
- CAS:
- 1334378-46-9
- MF:
- C11H13N3O3S
- Structure:
- Chemical Name:
- 17β-Estradiol-[2,3,4-13C3]
- CAS:
- 1261254-48-1
- MF:
- C18H24O2
- Structure:
- Chemical Name:
- Decoquinate-d5
- CAS:
- 1453100-61-2
- MF:
- C24H35NO5
- Chemical Name:
- Maize GMO Standard 98140
- Chemical Name:
- ASTM D5307 Crude oil qualitative standard
- Chemical Name:
- EPA 8270 Base-Neutrals Calibration Check Mix
- Chemical Name:
- Real Crystal IR sample cards
- Structure:
- Chemical Name:
- Titanium Standard for AAS
- MF:
- Ti
- Chemical Name:
- Replacement Viton O-rings for plunger Z506737
- Chemical Name:
- α-Alumina (0.10 m2/g) (nitrogen BET specific surface area)
- Chemical Name:
- Quick Press KBr pellet kit
- Chemical Name:
- HYDRANAL-Molecular sieve 0.3 nm
- Chemical Name:
- EPA 8270 Base Neutral Calibration Mix 2
- Chemical Name:
- Multielement standard solution 4 for ICP
- Chemical Name:
- Leaded brass
- Chemical Name:
- Galvanizing Alloy
- Chemical Name:
- Polystyrene standard set Mp 400-1′800′000
- Chemical Name:
- Titanium (impurities)
- Structure:
- Chemical Name:
- Iron, AAS standard solution, Fe 50g/l
- MF:
- Fe
- Chemical Name:
- Volatile Organic Compounds Mix 6
- Chemical Name:
- N,Nμ-(Methylenediphenylene)bis{4-(2-pyridinyl)-1-piperazinecarboxamide} (derivative of 4,4μ-MDIP)
- Chemical Name:
- EPA 8080 Pesticides Mix
- Chemical Name:
- EPA Purgeable A
- Chemical Name:
- EPA Phthalate Esters Mix
- Chemical Name:
- EPA 8040A Phenol Calibration Mix
- Chemical Name:
- Margarine (vitamins)
- Chemical Name:
- EPA VOC Mix 7
- Chemical Name:
- Human serum (high progesterone)
- Chemical Name:
- EPA 524 Surrogate Standard Mix
- Chemical Name:
- Human serum (low creatinine)
- Structure:
- Chemical Name:
- 262-NP, 4-(1,1,5-Trimethylhexyl)phenol
- CAS:
- 521947-27-3
- MF:
- C15H24O
- Chemical Name:
- Bovine urine (clenbuterol, salbutamol low level)
- Chemical Name:
- EPA 8270 Supplemental Mix 3
- Chemical Name:
- GC Volatiles Mix 1
- Chemical Name:
- Wastewater (trace elements)
- Structure:
- Chemical Name:
- Boron Standard for ICP
- MF:
- BH3
- Chemical Name:
- EPA VOC Mix 1
- Structure:
- Chemical Name:
- Calcium ICP/DCP standard solution
- MF:
- Ca
- Chemical Name:
- EPA VOC Mix 4
- Chemical Name:
- EPA 8040A Phenols Mix
- Chemical Name:
- Oxygenates Mix 1
- Chemical Name:
- Ground water (trace elements, low level)
- Structure:
- Chemical Name:
- Calcium matrix modifier solution
- MF:
- Ca
- Chemical Name:
- 2-(Bromomethyl)tetra-2H-pyran
- Structure:
- Chemical Name:
- 2-Diphenylacetyl-3-(cyclohexyl-hydrazono)indan-1-one
- CAS:
- 108041-11-8
- MF:
- C29H26N2O2
- Chemical Name:
- Petroleum Refinery Reformate
- Chemical Name:
- MISA Group 17 Non-Halogen Organic Mix
- Structure:
- Chemical Name:
- Aluminum ICP/DCP standard solution
- MF:
- Al
- Chemical Name:
- Chlorine 37Cl (certified for isotope abundance ratio)
- Chemical Name:
- Olefins Mix
- Chemical Name:
- Acid Herbicide Spiking Mix 2
- Chemical Name:
- EPA 8270 Acids Surrogate Spike Mix
- Structure:
- Chemical Name:
- Creatinine (interfering substances)
- MF:
- C4H7N3O
- Structure:
- Chemical Name:
- Cadmium-111Cd solution
- MF:
- Cd
- Chemical Name:
- HPLC Isocratic Systems Diagnostics Mix
- Chemical Name:
- Oxygen in nitrogen, 6 %
- Chemical Name:
- Defatted peanut meal (aflatoxin B1, high level)
- Chemical Name:
- Lithium carbonate-7Li
- MF:
- 7Li2CO3
- Chemical Name:
- EPA 8081 Pesticide Standard Mix
- Chemical Name:
- EPA 8015 Nonhalogenated Volatile Organics Mix