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://Septa and Cap for Screw Thread Sample Vials

Septa and Cap for Screw Thread Sample Vials

Cap: Screw Thread
Structure: Septa And Cap
Septa : PTFE & Silicone

Category:

Description

Description of Septa and Cap for Screw Thread Sample Vials

Hawach Scientific Co., Ltd caps are all manufactured from high quality polypropylene and fit all of the 8mm and 9mm screw thread top sample vials, very good quality and performance, this type is the most welcomed by all of our clients.

Features of Septa and Cap for Screw Thread Sample Vials

Promptly delivery and service
OEM size and type services

Advantages of Septa and Cap for Screw Thread Sample Vials

Crimp caps provides the strict seal reducing the chance of sample evaporation

Applications

The caps and septa available can be utilized in high quality, compliant glass vials
An optional pressure safety release cap at 45 psi can also be provided.

The HPLC-UV Test of Septa Extractable Species

Experiment Purpose:
Use HPLC-UV method to test of menthol extraction solution of Hawach, Agilent, Thermo PTFE bonded silicon septa, to confirm there are no obvious extraction species in our septa compared to world-famous septa.

Experiment process:
Put 100 mg Hawach, Agilent, Thermo PTFE bonded silicon septa in 2mL ACN:H2O=1:1 solution for 24 h at room temperature, and then use HPLC-UV to test the extraction solution to see if there are some obviously impurities.

Experiment results:
According to the HPLC-UV result of the comparison of Hawach, Agilent, Thermo PTFE bonded silicon septa, we can see that all septa have same impurity peaks at time 5-10 min and 11-21 min, however, the response level is very small and almost has no influence on customers’ results. Meanwhile, we suppose that the impurities mainly come from the extraction of the silicon layer, reminding customers to use septa correctly by putting PTFE layer toward the as-tested liquid.

Septa and Cap for Screw Thread Sample Vials_The HPLC-UV Test of Septa Extractable Species

Technical Data

Septum Material Compatible with Incompatible with Resealability Max.
Temperature
PTFE/Silicone,
PTFE/Silicone/PTFE
PTFE resistance until punctured, then septa will have compatibility of silicone —- Average < 200°C
Silicone/Silicone
Rubber
Alcohol, acetone, ether, DMF, DMSO ACN, THF, benzene chloroform, pyridine, hexane, heptane Excellent < 200°C
PTFE/Natural
or Butyl Rubber
PTFE resistance until punctured, then septa will have compatibility of rubber —- Good < 100°C
Rubber
(Natural or Butyl)
ACN, acetone, DMF, alcohols, diethylamine,
DMSO, phenols
Chlorinated solvents, aromatics,
hydrocarbons, carbon disulfide
Excellent < 100°C

Ordering Information

Item # Description
SLSSC002S Preassemble, No pre-silt PTFE/silicone septa + Blue screw cap, for 9-425 Screw Vials
SLSSC002SP Preassemble, Pre-slit PTFE/silicone septa + Blue screw cap, for 9-425 Screw Vials
SLSSC001S Preassemble, No pre-silt PTFE/silicone septa + Black screw cap, for 8-425 Screw Vials
SLSSC001SP Preassemble, Pre-slit PTFE/silicone septa + Black screw cap, for 8-425 Screw Vials
SLV20SCH PTFE/silicone Septa + White/Black Screw Cap With Hole,For 20mL /40mL Vial
SLV20SCS PTFE/silicone Septa + White/Black Screw Cap Without Hole, For 20mL /40mL Vial
SLV20SAS Aluminum Septa + White/Black Caps Without Hole, For 20mL /40mL Vial
SLV10/20SCM Screw Magnetic Cap + Septa, Match with SLV101M/SLV201M, 100pcs/pk
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