22‐1 Nishishinjuku 6‐chome, Shinjuku‐kuTokyo 163‐1130, Japan
Tel: +81‐(0)3‐5323‐6620
Fax: +81‐(0)3‐5323‐6621
E‐mail: world@gls.co.jp
Web: www.glsciences.com

Subject: HPLC, LC/MS Columns’ End‐fitting Style Changing Notice
Feb 1st, 2019
Dear Valued Customers,
Thank you for using GL Sciences high quality (U)HPLC columns.
Please be aware that GL Sciences’ (U)HPLC columns end‐fitting will be changed to “Parker type (UP)”. All theother end‐fitting types will be discontinued
Relevant products: All HPLC, LC/MS Columns
Implementation Start Date: The columns which are manufactured from March 1, 2019
Current column end‐fitting style:(1) 1/16 inch Waters‐compatible type (W type)(2) Parker type (UP type)New column end‐fitting style:
Parker type (UP type)(1) Difference of both end‐fittings:
HPLC, LC/MS columns’ end‐fittings are 1/16 inch Waters‐compatible (W type) and Parker type (UP type),
which differ in the length of tubing tip. Connections with different fittings may cause dead volume,
liquid leakage, and failure to connect the column to tubing.
1/16 inch Waters‐compatible type (W type)

Parker type (UP type)(2) How to recognize column end‐fitting:
The columns’ end‐fitting can be recognized by the package label and the column label.
Label example (W type)

GL SCIENCES INC BANK ACCOUNTName: MUFG BANK, LTD.
Address: SHINJUKU NISHI BRANCH
1‐8‐1 NISHISHINJUKU, SHINJUKU‐KU,
TOKYO 163‐0023, JAPANAccount No. : 9000332
SWIFT Code : BOTKJPJTTel: +81‐(0)3‐3346‐1233

Label example (UP type)

GL Sciences, Inc. USA4733 Torrance Blvd. Suite 255
Torrance, CA 90503, USATel: +1 310‐265‐4424
Fax : +1 310‐265‐4425
Email : info@glsciencesinc.com
Web : www.glsciencesinc.com

GL Sciences B.V.
De Sleutel 95652 AS Eindhoven
The Netherlands
Tel: +31 (0)40 254 95 31
Email : info@glsciences.eu
Web : www.glsciences.eu

22‐1 Nishishinjuku 6‐chome, Shinjuku‐kuTokyo 163‐1130, Japan
Tel: +81‐(0)3‐5323‐6620
Fax: +81‐(0)3‐5323‐6621
E‐mail: world@gls.co.jp
Web: www.glsciences.com(3) Cautions
Refer to points (1) and (2) to check columns’ end‐fitting and the tubing connection
Please make sure to adjust the tubing tip to the 2.4 mm Parker type.
1/16 inch Waters‐compatible type (W type)

Parker type (UP type)FerruleFitting(10-32UNF)

FerruleFitting(10-32UNF)
3.3 mm

2.4 mmNote the following check is required when connecting columns with different end‐fitting type:
If the ferrule material is PEEK, adjust the ferrule position and lightly pressing tubing to connect to thecolumn.
If you used a stainless steel ferrule, the tubing is fixed with a ferrule. Therefore the fitting needs to be
replaced before connecting to the column.

Should you have any questions, please feel free to ask.
Sincerely yours,

Mitsuhiro Kurano
Operating Officer
International Department
GL Sciences Inc.

GL SCIENCES INC BANK ACCOUNTName: MUFG BANK, LTD.
Address: SHINJUKU NISHI BRANCH
1‐8‐1 NISHISHINJUKU, SHINJUKU‐KU,
TOKYO 163‐0023, JAPANAccount No. : 9000332
SWIFT Code : BOTKJPJTTel: +81‐(0)3‐3346‐1233

GL Sciences, Inc. USA
4733 Torrance Blvd. Suite 255
Torrance, CA 90503, USATel: +1 310‐265‐4424
Fax : +1 310‐265‐4425
Email : info@glsciencesinc.com
Web : www.glsciencesinc.com

GL Sciences B.V.
De Sleutel 95652 AS Eindhoven
The Netherlands
Tel: +31 (0)40 254 95 31
Email : info@glsciences.eu
Web : www.glsciences.eu