Office Location
Shenzhen, China
Production Address
B1501, Meixun Science Park,
No.19, Jinxiu Zhonglu ,
Pingshan.
Durastab Medtec LTD has always adhered to the mission of "making diagnostic reagents more stable and more accurate" since its establishment, and is committed to providing excellent ready-to-use reagent solutions to global advanced medical diagnostic companies.
To date, Durastab has successfully provided products to over 600 companies and research teams at thousands of universities and scientific research institutions worldwide, among which are more than 50 listed IVD companies.
About UspNPP Stop Solution 405 is used to terminate the color development reaction of pNPP substrates. Upon termination, the reaction product turns yellow and exhibits stable OD values, making it suitable for absorbance reading at 405–420 nm. This product does not contain strong alkali components, offering safer transportation, handling, and usage. pNPP Stop Solution 405 prevents post‑termination increases or decreases in OD values, ensuring more accurate detection results.
pNPP Stop Solution 405
pNPP Stop Solution 405 is used to terminate the color development reaction of pNPP substrates. Upon termination, the reaction product turns yellow and exhibits stable OD values, making it suitable for absorbance reading at 405–420 nm. This product does not contain strong alkali components, offering safer transportation, handling, and usage. pNPP Stop Solution 405 prevents post‑termination increases or decreases in OD values, ensuring more accurate detection results.
Art no: STPY
Package size: 1L, 5L, 25L,bulk
pH value: 6.0-8.0
Shelf life: 3 years
Storage: RT
Application: ELISA
Instruction:
ELISA stopping step:
1. Chromogenic Reaction: Add 100 μL of TMB substrate solution to each well. Incubate for an appropriate period until the solution gradually turns yellow.
2. Stop:Add 100 μL of TMB Stop Solution 450 to each well. Upon termination, the solution remains unchanged .
3. detection:Measure the absorbance at OD405 or OD405/630 using a microplate reader.
For research use only or for further use in the production of detection kits. Not for human or animal use!

Committed to providing excellent ready-to-use reagent solutions to global advanced medical diagnostic companies.
Send Request B1501, Meixun Science Park,
No.19, Jinxiu Zhonglu ,
Pingshan.

