Tubing - peristaltic

PureWeld XL TPE Tubing


PureWeld® XL - high performance TPE tubing

Designed for secure, cost effective peristaltic pumping and transfer duties, PureWeld XL tubing provides exceptional life and accurate flow rates compared to other TPE tubing. PureWeld XL provides excellent chemical resistance making it suitable for a range of bioprocessing fluids. PureWeld XL can be welded, allowing complete fluid paths to be assembled in minutes. The tubes’ ultra-smooth bore and wall are ideal for ultrasonic flow measurement, and is engineered to reduce spallation.

Chemical Compatibility Guide

Features and benefits

  • Reduces inventory and minimizes fluid contact materials
  • Full compendial data to USP <788> for sub-visible particulates
  • EP 2.6.14, USP<85> for bacterial endotoxins
  • Suitable for sterilization by Gamma irradiation
  • Animal-derived content free (ADCF)

Technical summary

SpallationVery low 
CertificationEC 1935/2004, FDA 21CFR177.1810, USP <661>, USP <788>, USP <85>, USP Class VI 

Technical Summary table lists features available within the range. See ‘Technical specifications’ tab for model specific information.



Pumping life


Technical specifications

Bore size0.5 - 25.4 mm
Bore size0.02 - 1 in
Wall thickness1.6 - 4.8 mm
Wall thickness0.0625 - 0.1875 in
Length15 - 152 m
SpallationVery low 
CertificationEC 1935/2004, FDA 21CFR177.1810, USP <661>, USP <788>, USP <85>, USP Class VI 
Operating temperature range -20 to 80 °C
Operating temperature range -4 to 176 °F
Hardness, shore A (5sec)65-73 
Specific gravity0.89-0.91 g/ml
UV resistance Good 
Tear B30-45 kN/m
Tear B>148 ppi
Ultimate tensile strength63-180 bar
Ultimate tensile strength1450-1930 psi
Elongation at break>450 %
Tensile stress at 100% elongation2.4-3.5 Mpa
Tensile stress at 100% elongation290-435 Psi
Gas permeability ratingLow 
Compression set74 %
Water absorptionLow 
Sterilisation methodsGamma 
Weight0.15 - 6.6 kg
Weight0.33 - 14.55 lbs
ISO Hardness: ISO 868; Specific gravity: ISO2781; Tear B, Ultimate tensile strength, Elongation at break, Tensile stress at 100 % elongation; ISO37-2005. Values reported above are not intended for sales specification and some of the properties are not routinely measured.

Materials of construction



About the PureWeld XL tubing validation guides

PureWeld XL and its raw materials have been tested under a range of pharmacopoeial and non pharmacopoeial standards. These include:

  • USP Biocompatibility in vivo and in vitro
  • European Pharmacopoeia, 3.1.9
  • ISO 10993
  • EC 1935/2004

Additional testing carried out includes extractables testing. For a summary of the validation/qualification testing that has been carried out on PureWeld XL, please see the summary guide.

The full validation guide including additional information regarding test methods and actual test reports.

PureWeld XL, its raw materials and manufacturing process meets a number of regulatory compliance legislations. Specific statements relating to these compliances can be found in the Pumpsil compliance guide which can be requested below.

PureWeld XLadditionally complies with the legal regulations laid down in the Regulation (EC) No. 1935/2004.

PureWeld XL declaration of compliance

Certificate of conformance

Validation summary guide

The summary guide summarizes the validation/qualification testing that has been carried out on PureWeld XL TPE tubing.

View PureWeld XL summary guide - 366.3kb

Request full validation guide

Disclaimer: You hereby agree the provided validation guide is for private use only to assist in the qualification of the products listed within the validation guide.

You also agree that you will not copy, redistribute, transmit, assign, sell, broadcast, rent, share, lend, modify, adapt, edit or transfer the validation guide to any other party without prior consent from WMFTG.



  1. Bioprocessing industry (US).pdf
    PDF - 2.9mb
  2. Tubing overview (EN).pdf
    PDF - 841.6kb
  3. Biopharm tubing (US).pdf
    PDF - 2.4mb


  1. PureWeld XL datasheet (US).pdf
    PDF - 191.2kb

Other Resources

  1. PureWeld declaration of compliance (EN).pdf
    PDF - 207.4kb

Production and packaging


Watson-Marlow PureWeld XL tubing is a high purity product which is produced in a state-of-the-art ISO14644-1 Class 7 facility. PureWeld XL is a thermoplastic elastomer tube which is produced from synthetic components. PureWeld XL does not include any natural rubber products such as latex and is animal derived content free. There are no known carcinogens used in the tubing or in the production of the tubing. The raw material has been fully tested to USP Class VI and FDA CFR177.1810.

Watson-Marlow PureWeld XL tubing is manufactured from virgin pellet only, no regrind is used in the production. The raw material is manufactured under strict controls of ingredients, operating procedure and packaging. Each lot of raw material undergoes mechanical testing to ensure compliance with the material specification. Full traceability is assured through the lot number of the tubing, this enables the raw material, manufacturing equipment, quality control records and production records to be identified.


PureWeld XL tubing is double-packed in heat-sealed polythene bags in the ISO14644-1 Class 7 clean room. The bags are labeled with the PureWeld XL part number, lot number, use-by date and tube description. The standard coil length is 15m/50', other coil lengths or cut lengths are available on request.

Tubing reels, which include up to 500'/152m of tubing, are also available for 1.6, 2.4 and 3.2mm wall tubing.

The bagged PureWeld XL coils and reels are packed in a card box outside the clean room. The card boxes are, like the polythene bags, labeled with the PureWeld XL part number, lot number, use-by date and tube description. A lot-specific certificate of conformance is included with each pack of tubing.

Full lot traceability is maintained for every batch of tubing produced through detailed raw material and production records, hard copy and electronic production data and retain samples.


All tubing packaging is labeled with the product description, part and lot numbers, use-by date and a barcode of this information. Included in the box is the certificate of conformance. As part of the Watson-Marlow ISO9001:2008 system, lot records and process data are stored for all tubing produced in the plant.

Full lot traceability to raw material supply is therefore assured. All records are kept for the shelf life of the tubing. The plastic packaging used in direct contact with the tubing is also lot traceable and, as with the tubing, all lot records are kept for the shelf life of the tubing.

A sample of every production batch of PureWeld XL tubing is retained for reference.

Download a copy of your certificate of conformance for Watson-Marlow tubing and sanitary tubing elements.

Order Information

Product codes

PureWeldXL product codes

PureWeld XL peristaltic pump tubing sizes available
Bore Wall Part number
mm inch mm inch
0.5 1/50 1.6 1/16 942.0005.016
1.6 1/16 1.6 1/16 942.0016.016
3.2 1/8 1.6 1/16 942.0032.016
4.8 3/16 1.6 1/16 942.0048.016
6.4 1/4 1.6 1/16 942.0064.016
6.4 1/4 2.4 3/32 942.0064.024
8.0 5/16 1.6 1/16 942.0080.016
8.0 5/16 2.4 3/32 942.0080.024
9.6 3/8 2.4 3/32 942.0096.024
9.6 3/8 3.2 1/8 942.0096.032
9.6 3/8 4.8 3/16 942.0096.048
12.7 1/2 3.2 1/8 942.0127.032
12.7 1/2 4.8 3/16 942.0127.048
19.0 3/4 4.8 3/16 942.0190.048
25.4 1 4.8 3/16 942.0254.048

All sizes of PureWeld XL tubing are available in 50ft (15m) coils. Custom sizes are available to order, as are other specific requirements.

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