The water for pharmaceutical production should not contain any bacteria, impurities and other microorganisms.
Therefore, Xiaobian
A new method promotes the progress of pesticide residue detection technology and establishes a safety barrier for agricultural products
Time of Update: 2022-04-30
After the improvement of material living standards, people pay more attention to food quality and safety, and pesticide residues, as one of the main problems of agricultural products, have received a lot of attention .
What are the operation and maintenance methods of the automatic nucleic acid detection reagent filling machine
Time of Update: 2022-04-29
Operation and maintenance of automatic nucleic acid detection reagent filling machine: 1.
Chinese scholars and overseas collaborators report a new method to accurately detect circularly polarized light
Time of Update: 2022-04-21
(a) Schematic diagram of photocurrent detection based on ion channel and electrochemical device; (b) relationship between photocurrent and incident light polarization degree of monolayer and trilayer chiral nanofilms; (c) circularly polarized light
JCLA: Comparison of ELISA and Dot Blot for the Detection of Graves' Disease TSH Receptor Antibodies
Time of Update: 2022-04-16
Therefore, we developed a recombinant human TSHR-169 protein (hTSHR-169), which can specifically recognize TRAb in sera of GD patients, and compared the diagnostic ability of TRAb detected by ELISA and dot blot for GD .
Rapid detection of coliform bacteria (MPN method and plate method) (1)
Time of Update: 2022-03-19
The coliform group refers to a group of gram-negative non-bacillus bacteria that can ferment lactose, produce acid or aldehyde, and produce β-galactosidase aerobic or facultative anaerobic
Rapid detection of aflatoxin (immunoaffinity column method)
Time of Update: 2022-03-18
(4) Wash the affinity column with 10 mL of chromatographically pure methanol at a flow rate of 1 to 2 drops/s, collect all sample eluent in a test tube, add 1.
Rapid detection of coliform bacteria (MPN method and plate method) (2)
Time of Update: 2022-03-18
[Sample Preparation]>Take 25mL (or 25g) sample with aseptic procedure and add it to a wide-mouth bottle (or Erlenmeyer flask)
Rapid detection of aflatoxin (ELlSA method)
Time of Update: 2022-03-18
(3) Wash the enzyme-labeled microplate with washing solution 3 times, 3 minutes each time, add 50uL series aflatoxin B1 standard solution and 50μL sample extract to each well, then add 50μL diluted antibody, and incubate at 37°C for 1.
Rapid detection of nitrate (colorimetric method)
Time of Update: 2022-03-17
[Detection principle]According to the color development principle of naphthalene ethylenediamine hydrochloride, it is made into a rapid test tube.
Comparison of Waste Oil Detection Methods
Time of Update: 2022-03-17
>>2. Quick test paper>The content of free fatty acids in edible oil is less, but as heating will cause the hydrolysis of triglycerides, the generated volatile products contain free fatty acids
Rapid detection of pesticide residues in vegetables in circulation (speed measuring instrument method)
Time of Update: 2022-03-17
rapid tester method, its detection basis is GB/T 5009. 199-2003 (Rapid detection of organophosphorus and carbamate pesticide residues in vegetables" . Its experimental principle is: according
Rapid detection of organophosphorus and carbamate pesticide residues (instrument method)
Time of Update: 2022-03-17
This standard specifies a rapid test method for the determination of organophosphorus and carbamate pesticide residues in vegetables by the enzyme inhibition method .
Shimadzu application: MDGC/GCMS method for the detection of organophosphorus pesticides in complex matrix samples
Time of Update: 2022-03-17
chromatography-mass spectrometer???? This article uses Shimadzu heart-cutting two-dimensional gas chromatography mass spectrometry MDGC/GCMS to analyze 29 kinds of organophosphorus pesticides in onion and garlic, which can effectively solve the problem. Background interference issues .
Detection method of preservative residues in fruit and vegetable preservation
Time of Update: 2022-03-17
At present, GC-MS technology has been incorporated into national standards, such as GB/T 19648-2006 (Determination of 500 Pesticides and Related Chemical Residues in Fruits and Vegetables by Gas Chromatography-Mass Spectrometry", with up to 500 detected components .
