GS-520 Discontinued: Current Options GS-220 HQ and GS-320 HQ

Record: 904

Category: Column Selection
Product: GS Series
Sample: N/A

Question

I was looking for specifications (dimensions, particle size, etc.) for GS-520 micro/semi-micro and preparative columns, but I couldn’t find them on the Shodex website. Could you provide this information?

Answer

The GS-520 series has been discontinued. The current available products are GS-220 HQ and GS-320 HQ. Their specifications are summarized below:

Standard Columns

• GS-220 HQ (Cat. F7600005): 7.5 mm I.D. × 300 mm, 6 µm, 150 Å

• GS-320 HQ (Cat. F7600006): 7.5 mm I.D. × 300 mm, 6 µm, 400 Å

Preparative Columns (made to order)

• GS-220 20G (Cat. F6810034): 20.0 mm I.D. × 500 mm, 13 µm

• GS-320 20G (Cat. F6810035): 20.0 mm I.D. × 500 mm, 13 µm

Guard Columns

• GS-2G 7B (Cat. F6710019): 7.5 mm I.D. × 50 mm

Notes

• Base material: polyvinyl alcohol

• Shipping solvent: H₂O/CH₃OH = 70/30

• Usable pH range: 2–9 (GS-220 HQ), 2–12 (GS-320 HQ)

• Target MW ranges (with pullulan, water as eluent):

  • GS-220 HQ: 300 – 3,000 Da (exclusion limit ~7,000)

  • GS-320 HQ: 300 – 20,000 Da (exclusion limit ~40,000)

For more details, refer to the GS-HQ catalog section.

Additional Comments

As of 2022, GS-520 was discontinued.

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