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Thermo Scientific Screw Caps

Thermo Scientific screw caps are organised into three different performance levels to suit different experiments, analytes, and budgets. SureSTART 9 mm screw caps provide you with the performance, reproducibility, and accuracy of results you’re looking for.

Performance Level 1 screw caps are for everyday applications and are a cost-effective choice.

Performance Level 2 screw caps are for high-throughput applications, when robustness and reproducibility are key.

Performance Level 3 screw caps provide the ultimate performance and sensitivity, while maintaining the highest levels of sample security and integrity.

Thermo Scientific Advanced Vial Closure System (AVCS) caps are polypropylene caps that are compatible with all 9 mm short thread screw vials, although it is recommend that they are used with Thermo Scientific SureStop vials to get maximum benefit of the two technologies.

There is a levelling feature within the AVCS designed caps that provide optimal liquid sealing. The innovative features found on the AVCS cap also give more autosampler compatibility with less autosampler interruptions, because of misaligned cap tilting, dislodged septa or septa push through.

AVCS caps not only have the most effective seal, but they also contain significantly less leachables than bonded caps. You’ll see a noticeably cleaner spectra when you use SureStop and AVCS as an alternative to bonded caps. The AVCS caps also come with a range of different septa materials.

Part Number Short Description Certified Thread Size Cap Material Vial Septa Vial Type Pack Size Colour Price Qty
6ASC9RT1 9mm Blue PP AVCS Screw Cap with Red Silicone/Ivory PTFE Septa, Level 2, 100pk Level 2 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 100 Blue
£18.84
6ASC9RT1F 9mm Blue PP AVCS Screw Cap with Red Silicone/Ivory PTFE Septa, Level 2, 5000pk Level 2 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 5000 Blue
£849.94
6ASC9RT1R 9mm Red PP AVCS Screw Cap with Silicone/White PTFE Septa, Level 2, 100pk Level 2 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 100 Red
£24.78
6ASC9RT1RF 9mm Red PP AVCS Screw Cap with Silicone/White PTFE Septa, Level 2, 5000pk Level 2 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 5000 Red
£1,118.33
6ASC9RT1RT 9mm Red PP AVCS Screw Cap with Silicone/White PTFE Septa, Level 2, 1000pk Level 2 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 1000 Red
£235.44
6ASC9RT1T 9mm Blue PP AVCS Screw Cap with Red Silicone/Ivory PTFE Septa, Level 2, 1000pk Level 2 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 1000 Blue
£178.94
6ASC9ST1 9mm Blue PP AVCS Screw Cap with White Silicone/Red PTFE Septa, Level 2, 100pk Level 2 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 100 Blue
£19.83
6ASC9ST1F 9mm Blue PP AVCS Screw Cap with White Silicone/Red PTFE Septa, Level 2, 5000pk Level 2 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 5000 Blue
£894.67
6ASC9ST1R 9mm Red PP AVCS Screw Cap with White Silicone/Red PTFE Septa, Level 2, 100pk Level 2 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 100 Red
£26.76
6ASC9ST1RF 9mm Red PP AVCS Screw Cap with White Silicone/Red PTFE Septa, Level 2, 5000pk Level 2 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 5000 Red
£1,207.79
6ASC9ST1RT 9mm Red PP AVCS Screw Cap with White Silicone/Red PTFE Septa, Level 2, 1000pk Level 2 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 1000 Red
£254.28
6ASC9ST1T 9mm Blue PP AVCS Screw Cap with White Silicone/Red PTFE Septa, Level 2, 1000pk Level 2 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 1000 Blue
£188.35
6ASC9STB1 9mm Blue PP Screw Cap with White Silicone/Beige PTFE Septa Bonded, Level 2, 100pk Level 2 9 mm Polypropylene Bonded PTFE/Silicone Screw Cap 100 Blue
£31.72
6ASC9STB1F 9mm Blue PP Screw Cap with White Silicone/Beige PTFE Septa Bonded, Level 2, 5000pk Level 2 9 mm Polypropylene Bonded PTFE/Silicone Screw Cap 5000 Blue
£1,431.47
6ASC9STB1T 9mm Blue PP Screw Cap with White Silicone/Beige PTFE Septa Bonded, Level 2, 1000pk Level 2 9 mm Polypropylene Bonded PTFE/Silicone Screw Cap 1000 Blue
£301.36
6ASC9STBS1 9mm Blue PP Screw Cap with White Silicone/Beige PTFE Septa Bonded Pre-slit, Level 2, 100pk Level 2 9 mm Polypropylene Pre-slit Bonded PTFE/Silicone Screw Cap 100 Blue
£48.57
6ASC9STBS1F 9mm Blue PP Screw Cap with White Silicone/Beige PTFE Septa Bonded Pre-slit, Level 2, 5000pk Level 2 9 mm Polypropylene Pre-slit Bonded PTFE/Silicone Screw Cap 5000 Blue
£2,191.93
6ASC9STBS1T 9mm Blue PP Screw Cap with White Silicone/Beige PTFE Septa Bonded Pre-slit, Level 2, 1000pk Level 2 9 mm Polypropylene Pre-slit Bonded PTFE/Silicone Screw Cap 1000 Blue
£461.46
6PMSC9ST1 9mm Blue/Gold PP with Magnetic Tinplate Cover AVCS Screw Cap with White Silicone/Red PTFE Septa, Level 3, 100pk Level 3 9 mm Polypropylene/Tinplate PTFE/Silicone AVCS Screw Cap 100 Blue/Gold
£52.54
6PSC9ST1 9mm Blue PP AVCS Screw Cap with White Silicone/Red PTFE Septa, Level 3, 100pk Level 3 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 100 Blue
£23.80
6PSC9ST101 9mm Blue PP AVCS Screw Cap with Blue Silicone/Clear PTFE Septa Soft, Level 3, 100pk Level 3 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 100 Blue
£47.58
6PSC9ST101X 9mm Blue PP AVCS Screw Cap with Blue Silicone/Clear PTFE Septa Pre-slit Soft, Level 3, 100pk Level 3 9 mm Polypropylene Pre-slit PTFE/Silicone AVCS Screw Cap 100 Blue
£44.60
6PSC9ST1F 9mm Blue PP AVCS Screw Cap with White Silicone/Red PTFE Septa, Level 3, 5000pk Level 3 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 5000 Blue
£1,073.59
6PSC9ST1R 9mm Red PP AVCS Screw Cap with White Silicone/Red PTFE Septa, level 3, 100pk Level 3 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 100 Red
£30.73
6PSC9ST1RF 9mm Red PP AVCS Screw Cap with White Silicone/Red PTFE Septa, level 3, 5000pk Level 3 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 5000 Red
£1,386.73
6PSC9ST1RT 9mm Red PP AVCS Screw Cap with White Silicone/Red PTFE Septa, level 3, 1000pk Level 3 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 1000 Red
£291.94
6PSC9ST1T 9mm Blue PP AVCS Screw Cap with White Silicone/Red PTFE Septa, Level 3, 1000pk Level 3 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 1000 Blue
£226.02
6PSC9STB1 9mm Black PP Screw Cap with White Silicone/Red PTFE Septa Bonded, Level 3, 100pk Level 3 9 mm Polypropylene Bonded PTFE/Silicone Screw Cap 100 Black
£42.63
6PSC9STB1F 9mm Black PP Screw Cap with White Silicone/Red PTFE Septa Bonded, Level 3, 5000pk Level 3 9 mm Polypropylene Bonded PTFE/Silicone Screw Cap 5000 Black
£1,923.53
6PSC9STB1T 9mm Black PP Screw Cap with White Silicone/Red PTFE Septa Bonded, Level 3, 1000pk Level 3 9 mm Polypropylene Bonded PTFE/Silicone Screw Cap 1000 Black
£404.95
6PSC9STBS1 9mm Grey PP Screw Cap with White Silicone/Red PTFE Septa Bonded Pre-slit, Level 3, 100pk Level 3 9 mm Polypropylene Pre-slit Bonded PTFE/Silicone Screw Cap 100 Grey
£55.51
6PSC9STBS1F 9mm Grey PP Screw Cap with White Silicone/Red PTFE Septa Bonded Pre-slit, Level 3, 5000pk Level 3 9 mm Polypropylene Pre-slit Bonded PTFE/Silicone Screw Cap 5000 Grey
£2,505.06
6PSC9STBS1T 9mm Grey PP Screw Cap with White Silicone/Red PTFE Septa Bonded Pre-slit, Level 3, 1000pk Level 3 9 mm Polypropylene Pre-slit Bonded PTFE/Silicone Screw Cap 1000 Grey
£527.38
6PSC9STS1 9mm Blue PP AVCS Screw Cap with White Silicone/Blue PTFE Septa Pre-slit, Level 3, 100pk Level 3 9 mm Polypropylene Pre-slit PTFE/Silicone AVCS Screw Cap 100 Blue
£32.71
6PSC9STS1F 9mm Blue PP AVCS Screw Cap with White Silicone/Blue PTFE Septa Pre-slit, Level 3, 5000pk Level 3 9 mm Polypropylene Pre-slit PTFE/Silicone AVCS Screw Cap 5000 Blue
£1,476.20
6PSC9STS1R 9mm Red PP AVCS Screw Cap with White Silicone/Blue PTFE Septa Pre-slit, Level 3, 100pk Level 3 9 mm Polypropylene Pre-slit PTFE/Silicone AVCS Screw Cap 100 Red
£39.66
6PSC9STS1RF 9mm Red PP AVCS Screw Cap with White Silicone/Blue PTFE Septa Pre-slit, Level 3, 5000pk Level 3 9 mm Polypropylene Pre-slit PTFE/Silicone AVCS Screw Cap 5000 Red
£1,789.32
6PSC9STS1RT 9mm Red PP AVCS Screw Cap with White Silicone/Blue PTFE Septa Pre-slit, Level 3, 1000pk Level 3 9 mm Polypropylene Pre-slit PTFE/Silicone AVCS Screw Cap 1000 Red
£376.70
6PSC9STS1T 9mm Blue PP AVCS Screw Cap with White Silicone/Blue PTFE Septa Pre-slit, Level 3, 1000pk Level 3 9 mm Polypropylene Pre-slit PTFE/Silicone AVCS Screw Cap 1000 Blue
£310.78
6PSC9TST 9mm Blue PP AVCS Screw Cap with Red PTFE/White Silicone/Red PTFE Septa, Level 3, 100pk Level 3 9 mm Polypropylene PTFE/Silicone/PTFE AVCS Screw Cap 100 Blue
£39.66
6PSC9TSTF 9mm Blue PP AVCS Screw Cap with Red PTFE/White Silicone/Red PTFE Septa, Level 3, 5000pk Level 3 9 mm Polypropylene PTFE/Silicone/PTFE AVCS Screw Cap 5000 Blue
£1,789.32
6PSC9TSTR 9mm Red PP AVCS Screw Cap with Red PTFE/White Silicone/Red PTFE Septa, Level 3, 100pk Level 3 9 mm Polypropylene PTFE/Silicone/PTFE AVCS Screw Cap 100 Red
£39.66
6PSC9TSTRF 9mm Red PP AVCS Screw Cap with Red PTFE/White Silicone/Red PTFE Septa, Level 3, 5000pk Level 3 9 mm Polypropylene PTFE/Silicone/PTFE AVCS Screw Cap 5000 Red
£1,789.32
6PSC9TSTRT 9mm Red PP AVCS Screw Cap with Red PTFE/White Silicone/Red PTFE Septa, Level 3, 1000pk Level 3 9 mm Polypropylene PTFE/Silicone/PTFE AVCS Screw Cap 1000 Red
£376.70
6PSC9TSTT 9mm Blue PP AVCS Screw Cap with Red PTFE/White Silicone/Red PTFE Septa, Level 3, 1000pk Level 3 9 mm Polypropylene PTFE/Silicone/PTFE AVCS Screw Cap 1000 Blue
£376.70
CHSC9-10F 9mm Blue PP AVCS Screw Cap with Red Natural Rubber/Clear PTFE Septa, Level 1, 5000pk Level 1 9 mm Polypropylene PTFE/Rubber AVCS Screw Cap 5000 Blue
£581.53
CHSC9-10T 9mm Blue PP AVCS Screw Cap with Red Natural Rubber/Clear PTFE Septa, Level 1, 1000pk Level 1 9 mm Polypropylene PTFE/Rubber AVCS Screw Cap 1000 Blue
£122.43
CHSC9-20F 9mm Blue PP AVCS Screw Cap with Red Silicone/Ivory PTFE Septa, Level 1, 5000pk Level 1 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 5000 Blue
£671.00
CHSC9-20T 9mm Blue PP AVCS Screw Cap with Red Silicone/Ivory PTFE Septa, Level 1, 1000pk Level 1 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 1000 Blue
£141.27
CHSC9-30F 9mm Blue PP AVCS Screw Cap with White Silicone/Red PTFE Septa, Level 1, 5000pk Level 1 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 5000 Blue
£715.73
CHSC9-30T 9mm Blue PP AVCS Screw Cap with White Silicone/Red PTFE Septa, Level 1, 1000pk Level 1 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 1000 Blue
£150.67
CHSC9-35UBF 9mm Blue PP Screw Cap with White Silicone/White PTFE Septa Bonded, Level 1, 5000pk Level 1 9 mm Polypropylene Bonded PTFE/Silicone Screw Cap 5000 Blue
£984.13
CHSC9-35UBSF 9mm Blue PP Screw Cap with White Silicone/White PTFE Septa Bonded Pre-slit, Level 1, 5000pk Level 1 9 mm Polypropylene Pre-slit Bonded PTFE/Silicone Screw Cap 5000 Blue
£1,207.79
CHSC9-35UBST 9mm Blue PP Screw Cap with White Silicone/White PTFE Septa Bonded Pre-slit, Level 1, 1000pk Level 1 9 mm Polypropylene Pre-slit Bonded PTFE/Silicone Screw Cap 1000 Blue
£254.28
CHSC9-35UBT 9mm Blue PP Screw Cap with White Silicone/White PTFE Septa Bonded, Level 1, 1000pk Level 1 9 mm Polypropylene Bonded PTFE/Silicone Screw Cap 1000 Blue
£207.18
CHSC9-40F 9mm Blue PP AVCS Screw Cap with White Silicone/Blue PTFE Septa Pre-slit, Level 1, 5000pk Level 1 9 mm Polypropylene Pre-slit PTFE/Silicone AVCS Screw Cap 5000 Blue
£1,073.59
CHSC9-40T 9mm Blue PP AVCS Screw Cap with White Silicone/Blue PTFE Septa Pre-slit, Level 1, 1000pk Level 1 9 mm Polypropylene Pre-slit PTFE/Silicone AVCS Screw Cap 1000 Blue
£226.02
CHSC9-10 9mm Blue PP AVCS Screw Cap with Red Natural Rubber/Clear PTFE Septa, Level 1, 100pk Level 1 9 mm Polypropylene PTFE/Rubber AVCS Screw Cap 100 Blue
£12.55
CHSC9-20 9mm Blue PP AVCS Screw Cap with Red Silicone/Ivory PTFE Septa, Level 1, 100pk Level 1 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 100 Blue
£14.48
CHSC9-30 9mm Blue PP AVCS Screw Cap with White Silicone/Red PTFE Septa, Level 1, 100pk Level 1 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 100 Blue
£15.44
CHSC9-35UB 9mm Blue PP Screw Cap with White Silicone/White PTFE Septa Bonded, Level 1, 100pk Level 1 9 mm Polypropylene Bonded PTFE/Silicone Screw Cap 100 Blue
£21.24
CHSC9-35UBS 9mm Blue PP Screw Cap with White Silicone/White PTFE Septa Bonded Pre-slit, Level 1, 100pk Level 1 9 mm Polypropylene Pre-slit Bonded PTFE/Silicone Screw Cap 100 Blue
£26.06
CHSC9-40 9mm Blue PP AVCS Screw Cap with White Silicone/Blue PTFE Septa Pre-slit, Level 1, 100pk Level 1 9 mm Polypropylene Pre-slit PTFE/Silicone AVCS Screw Cap 100 Blue
£23.16
6ASC9CTRRT1 9mm Blue PP AVCS Screw Cap, Red Silicone Rubber/Ivory PTFE Septa, Level 2, 100pk Level 2 9 mm Polypropylene PTFE/Silicone Rubber AVCS Screw Cap 100 Blue
£39.68
6ASC9RT1B 9mm Black PP AVCS Screw Cap with Red Silicone/Ivory PTFE Septa, Level 2, 100pk Level 2 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 100 Black
£18.84
6ASC9RT1G 9mm Green PP AVCS Screw Cap with Red Silicone/Ivory PTFE Septa, Level 2, 100pk Level 2 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 100 Green
£18.84
6ASC9RT1Y 9mm Yellow PP AVCS Screw Cap with Red Silicone/Ivory PTFE Septa, Level 2, 100pk Level 2 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 100 Yellow
£18.84
6ASC9ST1B 9mm Black PP AVCS Screw Cap with White Silicone/Red PTFE Septa, Level 2, 100pk Level 2 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 100 Black
£19.83
6ASC9ST1G 9mm Green PP AVCS Screw Cap with White Silicone/Red PTFE Septa, Level 2, 100pk Level 2 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 100 Green
£19.83
6ASC9ST1Y 9mm Yellow PP AVCS Screw Cap with White Silicone/Red PTFE Septa, Level 2, 100pk Level 2 9 mm Polypropylene PTFE/Silicone AVCS Screw Cap 100 Yellow
£19.83
6PSC9STS1Y 9mm Yellow PP AVCS Screw Cap with White Silicone/Blue PTFE Septa, Level 3, 100pk Level 3 9 mm Polypropylene Pre-slit PTFE/Silicone AVCS Screw Cap 100 Yellow
£32.71
6PSC9TSTG 9mm Green PP AVCS Screw Cap with Red PTFE/White Silicone/Red PTFE Septa, Level 3, 100pk Level 3 9 mm Polypropylene PTFE/Silicone/PTFE AVCS Screw Cap 100 Green
£39.66
6PSC9TSTY 9mm Yellow PP AVCS Screw Cap with Red PTFE/White Silicone/Red PTFE Septa, Level 3, 100pk Level 3 9 mm Polypropylene PTFE/Silicone/PTFE AVCS Screw Cap 100 Yellow
£39.66
CHSC9-30UBS 9mm Blue PP Screw Cap with White Silicone/Red PTFE Septa Bonded Pre-Slit, Level 1, 100pk Level 1 9 mm Polypropylene Pre-slit Bonded PTFE/Silicone Screw Cap 100 Blue
£29.70

PTFE/Natural Red Rubber

PTFE/Natural Red Rubber are moderately priced seals for GC and HPLC with good chemical properties. They are ideal for multiple injections due to high resealability, but not as easy to penetrate as PTFE/Synthetic Red Rubber.

 

PTFE/Silicone Septa

PTFE/Silicone is the most versatile septum material offered in various formulations to address specific applications requirements. Extractables from PTFE/Silicone septa are generally at lower levels compared to other resealable materials. PTFE/Silicone septa are formulated for different hardness (durometer) meeting requirements of various needle types. Formulations offering highly consistent performance, lowest background/blank value, and good chemical compatibility, effective sealing/resealing and low penetration force make PTFE/Silicone septa suitable for all types of chromatographic applications. A thin film of PTFE is laminated to the side of the septum that faces the sample to limit exposure of the elastomer to the solvent. PTFE/Silicone septa are ideal for use in most HPLC and GC applications where resealability and purity are critical.

 

Pre-slit PTFE/Silicone Septa

Pre-slit septa are offered in many of the same formulations as for non-slit PTFE/silicone septa and shares most of the physical and chemical characteristics. The septum is provided with a thin 0.005” PTFE layer laminated to highly pure silicone, and slit through the center for easier needle penetration and to release the vacuum that forms when a large volume of sample is withdrawn from a vial. This septum provides chromatographic characteristics similar to that of a septum without a slit, except that the ability to withstand exposure to aggressive solvents is slightly lessened. Pre-slit septa are highly recommended for Shimadzu, Hitachi, and other autosamplers with thin gauge needles.

 

PTFE/Silicone/PTFE Septa

A layer of inert PTFE film is laminated to each side of high-purity, medium durometer silicone to form a septum that is resistant to coring, but still maintains good resealing characteristics. PTFE/Silicone/PTFE septa are recommended for the most critical applications such as ultratrace analysis, where there is a longer time between injections. PTFE/Silicone/PTFE septa provide superior performance with any autosampler employing a large diameter, blunt-tip needle. PTFE/Silicone/PTFE septa can have benefits when working with solvents that tend to attack silicone by protecting both sides of the elastomer.

Thermo Scientific SureStart Vials Catalogue 2022-2023 (11.97 MB)
Trusted quality SureSTART vials, caps, inserts, well plates, mats and accessories
SureSTART Vial Selection Brochure (896.67 kB)
Select the most appropriate SureSTART vials for your needs
SureSTART Performance Levels Flyer (810.75 kB)
Guide to the 3 performance levels within the SureSTART range
SureSTART 5 Reasons Why Flyer (327.50 kB)
Features and benefits of the SureSTART range
SureSTART LC Essentials Flyer (948.13 kB)
Recommended products for use with HPLC
SureSTART GC Essentials Flyer (755.59 kB)
Recommended products for use with GC
SureStop Vials and AVCS Closures Brochure (2.44 MB)
Technical overview of the AVCS closures and SureStop vials
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