NH2 HPLC Columns
NH2 HPLC columns can be used in the positive phase or in the negative phase, but it should be noted that the positive phase solvent and the negative phase solvent are usually not mutually soluble. New NH2 HPLC columns are preserved in the positive phase environment under normal circumstances.
Preservation of NH2 HPLC column
For the reversed phase, it can be preserved with 95% methanol or acetonitrile for short term storage. Methanol should be replaced successively with isopropanol and chloroform, and finally preserved with n-ethane for long term storage.
The usage of NH2 HPLC column
1.For positive phase usage
It is not suitable to analyze the compounds containing aldehyde compounds, carbonyl compounds and reducing sugar. The mobile phase shall be completely degassed and shall not contain carbonyl compounds or peroxides. When replacing the mobile phase of NH2 HPLC columns, ensure that the new mobile phase is mutually soluble with the original column storage solution.
2.For reversed phase
The ideal PH range is 3.0-7.0. The lower the PH is the more risk of hydrolysis. If there is buffer salt in the mobile phase, use the same proportion mobile phase without buffer salt to avoid the precipitation of buffer salt.
Contact : Bruce Lu, +86 29 89284429
Good deal: buying from seller
We invite you to read our terms of use. You can also visit our FAQ section and see our information section on the risks associated with counterfeiting.
This page is about importers and exporters of NH2 HPLC Columns Search in a category : Everything else / Bulk Search in a category : hplc, columns |
Tuesday, December 10, 2013
Quantity : A partir d - Price : A partir de 0,30 eur
NOTRE SOCIÉTÉ www.expert-parts.com fait partie de la société SZ REDLAC LIMITED, grossiste spécialisé en pièces détachées et accessoires téléphonie mobile (www.szredlac.com). Notre siège social se situe à Hong Kong, et nous disposons d'un bureau de représentation a Shenzhen en Chine...
SZ Redlac Limited
- expert-parts
- - Hong Kong
- 0086 186 88 79 03 51
- 0086 186 88 97 64 51
Friday, March 04, 2016
Quantity : 150 - Price : 280,00 €
You check your iPhone dozens and dozens of times a day, probably more. Entering a passcode each time just slows you down. But you do it because making sure no one else has access to your iPhone is important. With iPhone 5s, getting into your phone is faster, easier, and even a little futuristic...
Electronics Design Services
- CM23 2JP - Hertfordshire
- +447405858765
Tuesday, September 08, 2015
Module parameters HD-960P-38*38mm 1.3megapxel low-illumination HD web camera Network Camera - Sensor type 1/4 inch、1.3megapixel , CMOS low-illumination width dynamic sensor - Minimum illumination Color: 1 Lux/F1.2, black and white: 0.02Lux/F1.2 - Electronic shutter 1/5 second ~ 1/50...
ZT Technology Group Ltd.
- ellazhan
- 852 - Fo Tan
- +85 2 26 75 75 58