Thermo Fisher Scientific Viper and nanoViper Fingertight Fitting System Operating instructions

Brand: Thermo Fisher Scientific

Model: Viper and nanoViper Fingertight Fitting System

Type: Operating instructions

Viper and nanoViper

Viper and nanoViper

Fingertight Fitting

System

Installation and Operation Guide

4820.4006 Revision 10.0 • September 2017

The Thermo Scientific™ Viper™ fingertight fitting technology is manufactured

under, or covered by, one or more US patents, which are listed on the following

website (does not apply to Viper blind plugs):

http://www.thermoscientific.com/en/about-us/promotions/virtual-patent-marks-hplc.html

The Thermo Scientific™ Viper™ fingertight fitting system provides ease of use and virtually zero-

dead-volume plumbing of every (U)HPLC system. It is available in a stainless steel (SST) version

or in biocompatible versions (MP35N® or PEEK™). Viper SST and Viper MP35N withstand

backpressures of up to 1300 bar (19,000 psi) and 1500 bar (22,000 psi) respectively, while Viper

PEEK can be operated up to 345 bar (5000 psi).

nanoViper™ is a fingertight fitting system for nano LC connections. It is preassembled and

therefore overcomes the difficulties associated with assembling PEEK sleeve connections.

nanoViper is compatible with backpressures up to 1200 bar (17,400 psi).

Due to the tip sealing design, Viper and nanoViper improve chromatographic results

independent of various different connection geometries. Both systems are compatible with

virtually any third-party valve and union.

Viper and nanoViper are fingertight fitting systems, which require only very small torques to

seal. Therefore, it is essential to follow the guidelines below to avoid damages by over-

tightening.

1. Attach Viper or nanoViper to the target thread and tighten the

screw slowly until you feel the very first resistance. This is the

0° mark. Do not use tools other than the black knurled screw

for loosening and tightening a connection.

2. Tighten the screw clockwise to an angle between 0° and 45°

and start operating your system at the preferred working

pressure. Check whether all connections seal properly.

Usually, both fitting systems are tight after the first attempt.

3. If leakage occurs under these conditions, stop the flow and tighten the screw(s) gradually

further until the connection seals properly. Do not turn the screw by more than 90° to avoid

damage of the PEEK seal by over‐tightening. Do not apply force.

4. To extend the lifetime of Viper or nanoViper, loosen and tighten connections at atmospheric

system pressures only and at ambient temperature only. Loosening and tightening connections

at high system pressures or at temperatures higher than ambient can reduce the lifetime of the

fitting system.

For the connections of items, such as columns, which are difficult to grab firmly and to keep it

fixed by the hand while applying torque on the capillary and for the connection of MP35N

capillaries, please follow those additional steps:

5. Take the Viper fittings at the two ends of the column and twist

them simultaneously in opposite directions to an angle of

between 0 and 90 degrees maximum each site.

6. Start the flow and increase the pressure for few seconds and

then stop the flow.

7. Take the Viper fittings at the two ends of the column and tighten them again simultaneously in

opposite directions by a few additional degrees.

For further information on Viper and nanoViper, go to

https://www.thermofisher.com/us/en/home/industrial/chromatography/liquid-chromatography-lc/viper-fittings.html

©2016 Thermo Fisher Scientific Inc. All rights reserved. MP35N is a registered trademark of SPS Technologies. PEEK is a trademark of Victrex PLC. All other

trademarks are property of Thermo Fisher Scientific Inc. and its subsidiaries.

For ordering information or technical support on Viper and nanoViper

For ordering information, sales support or technical support for HPLC products, contact your local Thermo Fisher Scientific sales

organization or Thermo Fisher Scientific support organization. For contact information, go to Contact Us on

http://www.thermofisher.com.

www.thermoscientific.com

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Thermo Fisher Scientific Viper and nanoViper Fingertight Fitting System Operating instructions

Brand: Thermo Fisher Scientific

Model: Viper and nanoViper Fingertight Fitting System

Type: Operating instructions

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