When CMS replacement is needed
Nitrogen purity falls below target
Flow drops at the same operating pressure
Recovery declines and compressor load rises
The bed is old, dusty or exposed to oil/moisture
Exclusive authorised distributor in IndiaVerify authorised CarboTech listing
Genuine SHIRASAGI CMS with India-based technical support.
Carbon Molecular Sieves (CMS) for PSA Nitrogen Generators in IndiaGenuine CarboTech CMS from the exclusive authorised India distributor
Gastek supplies original CarboTech SHIRASAGI carbon molecular sieves for PSA nitrogen generation, hydrogen purification and biogas upgrading. The page is built for buyers who need verifiable supply, correct grade selection and long-term purity stability.
Authorised India channel
CMS grade guidance
PSA sizing support
Pan-India technical response
CMS buyer guide
Carbon Molecular Sieve for PSA nitrogen plants
Carbon molecular sieve is the adsorbent that makes PSA nitrogen generation possible. The right CMS grade improves purity stability, recovery and plant reliability; the wrong grade can increase air consumption, shorten service life and cause repeated purity alarms.
Primary job
Separate oxygen from compressed air
Buyer outcome
Stable nitrogen purity and recovery
How it works
Inside a PSA nitrogen generator
01
Compressed air enters the PSA beds
Clean, dry compressed air is fed into adsorber vessels packed with carbon molecular sieve.
02
CMS separates by molecular size and speed
Oxygen, moisture and trace gases are adsorbed preferentially, allowing nitrogen to pass through.
03
Nitrogen leaves at the required purity
The plant alternates between adsorption and regeneration cycles to deliver continuous nitrogen.
Data required for sizing
Flow rate and target purity
Operating pressure and cycle time
Adsorber vessel diameter and height
Existing CMS grade, age and symptoms
Why grade selection matters
CMS should be selected against the actual plant duty, not only by bag quantity or price. A correctly matched grade helps protect nitrogen purity, valve timing, compressor energy and the replacement interval.
Available grades
A CMS grade selector, not just a product list.
The correct carbon molecular sieve depends on gas duty, purity, flow, pressure and vessel geometry. These are the CarboTech SHIRASAGI grades we route most often for industrial PSA and gas separation projects.
01
Gas duty
Nitrogen, biogas or hydrogen first. Grade comes after duty.
02
Purity target
Match recovery and cycle behaviour to the required gas purity.
03
Bed geometry
Check vessel size, flow, pressure and existing adsorbent age.
01
PSA nitrogen
Standard industrial PSA nitrogen service
SHIRASAGI MSC 3KT172
A dependable 1.8 mm CMS grade for stable on-site nitrogen generation up to 99.9% purity.
Target
Up to 99.9% N2
Grade form
1.8 mm
Everyday plant replacement
Stable purityBroad PSA fitEfficient replacement
02
High-purity nitrogen
Demanding PSA nitrogen duty cycles
SHIRASAGI RZ1300
A finer 1.3 mm performance grade for high-purity nitrogen generation up to 99.999%.
Target
Up to 99.999% N2
Grade form
1.3 mm
Premium purity duty
Higher purityFast kineticsPremium duty
03
Biogas upgrading
CO2 removal and methane enrichment
SHIRASAGI MSC CT-350
Specialized CMS for CO2/CH4 separation in biomethane and renewable gas projects.
Target
CO2 / CH4
Grade form
CMS grade
Methane enrichment
Biogas dutyCO2 removalCH4 separation
04
Hydrogen PSA
Hydrogen purification trains
CMS H2 55/2
CMS grade selected for impurity removal and duty-cycle fit in PSA hydrogen purification.
Target
PSA H2
Grade form
55/2
Hydrogen purification
H2 dutyImpurity removalCycle fit
Not sure which grade fits the plant?
Share flow rate, target purity, operating pressure, cycle time, vessel dimensions and current CMS age. We will narrow the grade before you buy.
Why authorised supply matters
With CarboTech CMS, the wrong supply route can cost more than the price difference.
CMS replacement affects nitrogen purity, recovery, valve health, compressor load and plant uptime. That is why the supply route, documentation and grade match should be visible before procurement.
Stable purity
Replacement certainty
Technical accountability
Supply route
Authorised CarboTech supply
Official CarboTech channel for India
Low-cost imported alternative
Verification may depend on seller claim
Grade selection
Authorised CarboTech supply
Matched to PSA duty, gas and purity
Low-cost imported alternative
Often selected mainly on upfront cost
Documentation
Authorised CarboTech supply
Datasheets and traceability support
Low-cost imported alternative
Documentation may vary by batch
Operational risk
Authorised CarboTech supply
Lower uncertainty for critical plants
Low-cost imported alternative
Higher replacement and purity-risk exposure
| Parameter | Authorised CarboTech supply | Low-cost imported alternative |
|---|---|---|
| Supply route | Official CarboTech channel for India | Verification may depend on seller claim |
| Grade selection | Matched to PSA duty, gas and purity | Often selected mainly on upfront cost |
| Documentation | Datasheets and traceability support | Documentation may vary by batch |
| Operational risk | Lower uncertainty for critical plants | Higher replacement and purity-risk exposure |
Application fit
Industrial gas separation applications
The same CMS page should help buyers route the conversation quickly: nitrogen, biogas or hydrogen.
99.999%
purity target
Nitrogen Generation
For PSA nitrogen generators used in blanketing, packaging, purging, heat treatment and process protection.
Nitrogen plantsCO2/CH4
separation
Biogas Upgrading
For CO2 removal and methane enrichment in biomethane, renewable gas and fuel applications.
Biogas gradePSA H2
process fit
Hydrogen Purification
For hydrogen purification trains where stable adsorbent selection and duty-cycle fit matter.
PSA hydrogenBuyer FAQ
Carbon molecular sieve questions buyers ask before replacement
These answers cover the practical decisions behind CMS procurement: application fit, sizing data, replacement symptoms, premium-grade selection and authorised CarboTech supply in India.
01What is carbon molecular sieve used for?+-
Carbon molecular sieve is used as an adsorbent in PSA gas separation systems. In PSA nitrogen generators, CMS separates oxygen and other gases from compressed air so the plant can produce nitrogen on site.
02Which CMS is suitable for PSA nitrogen generators?+-
The right CMS depends on nitrogen flow, purity, pressure, cycle time and vessel size. CarboTech SHIRASAGI MSC 3KT172 is commonly used for standard industrial PSA nitrogen service, while RZ1300 is selected for higher-purity or more demanding duty.
03When should CMS be replaced in a nitrogen plant?+-
CMS replacement is usually considered when nitrogen purity becomes unstable, flow drops, recovery declines, pressure drop rises, or the adsorbent has been contaminated by oil, moisture or dust. Plant age and operating history should be reviewed before replacement.
04What details are needed for CMS sizing?+-
Useful details include required nitrogen flow, target purity, operating pressure, cycle time, adsorber vessel dimensions, existing CMS grade, current symptoms and the age of the adsorbent bed.
05Why is CarboTech CMS more expensive than Chinese CMS?+-
CarboTech CMS is a premium adsorbent selected for purity stability, recovery, documentation and long-term plant reliability. Low-cost CMS may reduce upfront purchase cost, but buyers should compare service life, replacement risk, compressor load and process downtime.
06How can buyers verify genuine CarboTech CMS supply in India?+-
Buyers should verify the CarboTech partner listing, confirm the exact CMS grade, ask for datasheets and traceability support, and make sure the supplier can size the adsorbent against the actual PSA plant duty.
07Can Gastek supply CMS for non-Gastek nitrogen plants?+-
Yes. Gastek can review CMS replacement requirements for PSA nitrogen plants made by other manufacturers, provided the operating data and vessel details are available for grade selection and sizing.
CMS replacement and sizing
Send plant data. We will recommend the right CarboTech CMS grade.
For replacement projects, the fastest path is to share operating details. Our team can review the duty and confirm whether MSC 3KT172, RZ1300, CT-350 or H2 55/2 is the right fit.
Useful details to share
Flow rate
Target purity
Operating pressure
Cycle time
Vessel size
Existing CMS age
Looking for Carbon Molecular Sieves outside India? Gastek supplies CMS to international markets including UAE, Saudi Arabia, Qatar, Egypt, Kuwait, Turkey, Oman, Kenya and Bangladesh.