Grace Guo
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Activity overview
Latest activity by Grace Guo-
Grace Guo created an article,
Do you have vials that are certified to Total organic carbon (TOC) analysis?
TOC vials are basically the same as the VOA vials. They could be certified to different levels depending on the TOC ppb level of detection. For example, the vials are pre-cleaned and certified to: ...
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Grace Guo created an article,
What’s in product number AH0-8278 (Strata® Syringe And Adaptor Kit Includes: Syringe And Adaptor Caps For SPE Tubes)?
This kit includes: Qty 2 of 20ml Slip Tip Syringe Qty 2 of adapter caps for 1, 3 and 6ml SPE tubes Qty 2 of adapter caps for 12, 20 and 60ml SPE tubes.
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Grace Guo created an article,
How can I load a flash column?
There are three major ways to load sample onto a flash column: Sample solution: make a sample solution and directly inject the sample onto the column. Internal dry loading: Adsorb the sample onto ...
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Grace Guo created an article,
What the particle sizes do you have for Claricep flash columns?
For the Irregular Silica media, we have 40-60 μm particle size. For Spherical Silica, the particle size is 20-35 μm. For the Spherical Bonded C18 phase media, both 20-35 μm and 40-60 μm are availab...
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Grace Guo created an article,
What is the difference between i-Series, s-Series and c-Series for Claricep flash column?
The i-Series columns provides customized loading method upon user preference. Easy loading of liquid samples directly onto the column head Choice of loading method based on sample properties Narro...
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Grace Guo created an article,
What is the typical sample loading amount for Claricep flash column?
Packing amount (40-60 um) Recommended Flow rate (mL) Volume (mL) Sample Loading Range (g) 4g 8 8 0.04-0.4 12g 15 24 0.12-1.2 20g 20 40 0.2-2.0 40g 30 ...
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Grace Guo created an article,
What media / phase do you have for Claricep flash columns?
The four highlighted phases we have are Claricep Irregular Silica columns, Spherical Silica columns, Spherical C18 columns and Spherical AQ C18 columns. There are other phases like NH2 or Phenyl av...
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Grace Guo created an article,
How should I choose the Claricep flash column series based on the instruments?
For Biotage instruments, the Claricep s-Series is recommended. The c-Series is compatible with the following instruments: Teledyne ISCO Agela Technologies Buchi Grace Interchim
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Grace Guo created an article,
Can I use acetone or DCM on silica based column like Luna or Kinetex?
There will be no problem to use acetone, DCM or other solvents on Luna or Kinetex column. However, you need to make sure these solvents are miscible with other solvents used in the mobile phase. Al...
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Grace Guo created an article,
What is the loading capacity of a reversed phase preparative column?
The loading capacity of reversed phase column depends on the property of your analytes as well as the separation you can get. Normally we suggest loading 1% of the sorbent mass. Please see the belo...