Storage caps
For storage and transport of conditioned or sampled tubes, long-term storage caps fitted with PTFE ferrules must be used to ensure an effective seal is achieved and minimise loss of sample/ingress onto the tube. Typically, brass Swagelok style caps are used but aluminium caps are available as an alternative.
- Recommended by international standard methods such as US EPA Method TO-17, ASTM D6196 and EN ISO 16017
- Independently validated for up to 27 months
- Caps meet a stringent cleanliness specification and tight manufacturing tolerances
Product List
Showing 20/20 results
Long-term storage cap- brass, 1/4 inch ID- includes PTFE ferrule- 10 pack
Product Code
C-CF010
Long-term storage cap- brass, 1/4 inch ID- includes PTFE ferrule- pack of 20
Product Code
C-CF020
Long-term storage cap- brass, 1/4 inch ID- includes PTFE ferrule- pack of 100
Product Code
C-CF100
Long-term storage cap- brass, 1/4 inch ID- includes PTFE ferrule- pack of 200
Product Code
C-CF200
Long-term storage cap- aluminium, 1/4 inch ID- includes PTFE ferrule- pack of 20
Product Code
C-CFA20
Long-term storage cap- aluminium, 1/4 inch ID- includes PTFE ferrule- pack of 200
Product Code
C-CFA200
Long-term storage cap- brass, 6mm ID (for DAAMS) includes PTFE ferrule- 10 pack
Product Code
C-CF010-XZ
Long-term storage cap- brass, 6mm ID (for DAAMS) includes PTFE ferrule- pack of 20
Product Code
C-CF020-XZ
Long-term storage cap- brass, 6mm ID (for DAAMS) includes PTFE ferrule- pack of 100
Product Code
C-CF100-XZ
Long-term storage cap- brass, 6mm ID (for DAAMS) includes PTFE ferrule- pack of 200
Product Code
C-CF200-XZ
Short-term storage cap- aluminium, 1/4 inch ID - pack of 20
Product Code
C-AC020
Short-term storage cap- aluminium, 1/4 inch ID - pack of 200
Product Code
C-AC200
Long-term storage caps- brass (one TAG-ready- one standard)
1/4" ID- includes PTFE ferrule- for stainless steel/inert tubes fitted with TubeTAG- 10 pack pairs
Product Code
C-TCFP10
Long-term storage caps- brass (one TAG-ready- one standard)
1/4" ID- includes PTFE ferrule- for stainless steel/inert tubes fitted with TubeTAG- pack of 100 pairs
Product Code
C-TCFP100
Long-term storage cap- brass (TAG-ready)
1/4" ID- includes PTFE ferrule- for glass tubes fitted with TubeTAG- pack of 100
Product Code
C-T4GCF100
Long-term storage cap- brass (TAG-ready)
6 mm ID- includes PTFE ferrule- for glass tubes fitted with TubeTAG- pack of 100
Product Code
C-T6GCF100
Long-term storage cap- brass (TAG-ready)
1/4" ID- includes PTFE ferrule- for glass tubes fitted with TubeTAG- 10 pack
Product Code
C-T4GCF10
Long-term storage cap- brass (TAG-ready)
6 mm ID- includes PTFE ferrule- for glass tubes fitted with TubeTAG- 10 pack
Product Code
C-T6GCF10
Long-term storage cap- brass (TAG-ready)
1/4" ID- includes PTFE ferrule- for stainless steel/inert tubes fitted with TubeTAG- pack of 100
Product Code
C-TCF100
Long-term storage cap- brass (TAG-ready)
1/4" ID- includes PTFE ferrule- for stainless steel/inert tubes fitted with TubeTAG- 10 pack
Product Code
C-TCF10
Overview
Caps are compatible with all industry-standard sorbent tubes: (6.35 mm o.d.) and 6 mm o.d. tubes (including DAAMS and TD Mini-tubes).
For storage, two caps are required per tube. For passive sampling, one cap is required for the non-sampling end, while a diffusive sampling cap is used on the sampling end.
Long-term (brass) storage caps ship as standard with tubes purchased pre-conditioned from Markes. Ferrules should be replaced routinely or when switching applications. To prevent overtightening of long-term storage caps, Markes recommends the CapLok tool.
Storage caps - short-term
Short-term storage caps are convenient for in-lab use and when using Markes’ patented SafeLok technology. They are ideal for sorbent tubes being analysed almost immediately after sampling (up to 3 days), and for inexperienced users. For transport or storage for more than 3 days, long-term storage caps must be used.
Markes International’s SafeLok tubes have a diffusion-locking insert at each end, to ensure sample integrity throughout storage, transport and analysis. They complement short-term storage caps and make them ideal for use by inexperienced users, adding an additional level of sample security and minimising risk of tube/cap damage.
Caps are compatible with all industry-standard sorbent tubes: (6.35 mm o.d.).
Part numbers:
C-CF010 - C-CF010-XZ - C-CF020 - C-CF020-XZ - C-CF100 - C-CF100-XZ - C-CF200 - C-CF200-XZ - C-CFA20 - C-CFA200 - C-AC020 - C-AC200 - C-TCFP10 - C-TCFP100 - C-T4GCF100 - C-T6GCF100 - C-T4GCF10 - C-T6GCF10 - C-TCF100 - C-TCF10
