Shimadzu, 638-43034-42, 24 mL Septum, 100 Pieces, ASI-L

Name: 24 mL Septum, 100 Pieces, ASI-L
Brand: Shimadzu
SKU: 638-43034-42

Catalog Number: 638-43034-42

Pricing

Send an RFQ.

General

Height	0.50 in
Length	4.50 in
Weight	0.15 lbs
Width	4.00 in

FAQs

Question: What is the septum diameter and construction?

Answer:Each septum is 20 mm in diameter and combines white silicone with a beige PTFE facing.

Question: Does 24 mL describe the septum size?

Answer:No. The 24 mL designation is the capacity of the compatible screw-neck vial, not the septum diameter.

Question: How many replacement septa are supplied?

Answer:One package contains 100 septa for compatible vial closures.

Application Note

Shimadzu replacement septa are intended for compatible 24 mL screw-neck sampling vials used in analytical workflows, including total organic carbon applications. Each septum has a nominal 20 mm diameter with a white silicone layer and beige PTFE facing, and the package contains 100 pieces. The elastomer layer supports cap compression, while the PTFE-facing surface provides a chemically resistant sample-contact barrier for suitable matrices. These septa work with the matching 20 mm screw-cap closure and vial-neck design; the 24 mL description identifies the associated vial capacity, not the diameter of the septum. Fit the septum squarely into a clean cap to prevent wrinkles, leaks or uneven compression. Select the sample-contact orientation correctly and avoid unnecessarily touching the PTFE surface during installation. Validate septum compatibility, needle puncture performance and background contribution for sensitive trace-organic analyses. Replace damaged or repeatedly pierced seals to maintain reproducible sample containment.

Ordering

Notice

Unless otherwise stated, the minimum order amount is USD 1,000.
For orders below USD 1,000, an additional handling fee may apply, or we may arrange local delivery / local handover where available.
All quotations are subject to final confirmation, including product availability, lead time, batch information, shipping cost, and applicable export or handling requirements.
For quotation requests, please send an RFQ from website or contact:

[email protected]

Please send inquiries directly to us in the “To” field. Emails sent via BCC, mass mailing, or with unrelated recipients may be automatically filtered and will not be processed.