Made to order

Microtrac BELCRYO X Cryogenic Unit for BELSORP Analyzers

With every system

Installation & integration setup and BELControl integration with your BELSORP
a variable-temperature measurement on your sample

Gas Adsorption Measurement, Microtrac Particle Characterization, Surface Area & Pore Size Distribution · Closed-cycle cryostat for gas adsorption

Microtrac BELCRYO X Cryogenic Unit for BELSORP Analyzers

Cryogenic unit for BELSORP analyzers — adsorption isotherms at any temperature from 35 to 473 K without liquid nitrogen, stability to ±0.001 K.

Add-on for BELSORP MAX X (incl. HP), MAX G and MINI X
Up to 3 samples, fully automated in BELControl
Installation and on-site training included · free test analysis of your sample
Configured to order · lead time from 4 weeks

Prices follow supplier cost and stock availability and are updated regularly. The price you see is today's price — once you order, it's held for 7 days.

Installation + training included Free test measurement

35–473 K temperature range

±0.001 K stability

LN₂ refills

3 samples

What your adsorption lab actually checks

Any temperature, no refills

35–473 K under program with ±0.001 K stability and no liquid-nitrogen top-ups — variable-temperature adsorption, isosteric heat and gas-storage isotherms that a fixed 77 K bath can't reach.

A materials engineer on the line

Compatibility, integration and isosteric-heat method support from engineers who run adsorption analysis in-house at Additive Plus.

35–473 K

Temperature range

±0.001 K

Stability

LN₂-free

Helium closed cycle

Up to 3

Samples

50 kg

Unit weight

About this product

Price

Quoted to your configuration

The price depends on the BELSORP analyzer it connects to and on the number of CRYO sample cells and gaskets. You receive a formal quotation on our letterhead with configuration, price, payment terms and lead time: the document your purchasing department asks for. Installation and on-site operator training are included in every quotation. Lead time from 4 weeks, depending on the configuration; the quotation gives the date.

What you get

BELCRYO X cryostat with single-stage Gifford-McMahon cryocooler and heater, vacuum-insulated chamber and radiation shielding
Separate helium compressor
LCD touch panel showing control temperature, chamber vacuum, heater and cryocooler status
CRYO sample cells of copper, 1.8 cm³, and aluminum gaskets
Control through BELControl, the operating software of the BELSORP series
Installation and on-site operator training — included in every quotation

Next stepRequest a formal quotation

The BELCRYO X is an add-on to a BELSORP MAX X, MAX G or MINI X. Tell us which analyzer you run and the temperatures you need, and we confirm the fit before you order.

35 – 473 KAdsorption at any temperature in this range, no liquid nitrogen

±0.001 KStability below 100 K; ±0.01 K at 100 K and above

3 samplesMeasured simultaneously

< 120 minCooling from 298 K to 35 K, for reference

What the BELCRYO X is

The BELCRYO X is a cryostat from Microtrac — an accessory that replaces the liquid nitrogen or argon Dewar on a BELSORP gas adsorption analyzer. A Gifford-McMahon cryocooler with a heater holds the sample cells at any set temperature from 35 K to 473 K, so isotherms are no longer tied to 77.4 K for LN₂ or 87.3 K for liquid argon, and long measurements have no time limit.

It connects to the BELSORP MAX X (including the HP version), the BELSORP MAX G and the BELSORP MINI X, and is controlled from the same BELControl software, fully automated from pretreatment to measurement. Up to three samples are measured at the same time.

Specifications

Control system	single-stage Gifford-McMahon cryocooler with heater
Temperature range	35 K – 473 K
Temperature stability	±0.001 K below 100 K · ±0.01 K at 100 K and above
Cooling time	298 K to 35 K in less than 120 minutes (for reference)
Samples	3
Pressure resistance	below 1 MPa (G)
Gases	N₂, Ar, Kr, Xe, CO₂, H₂, CH₄, CO and other non-corrosive gases
Sample cell	copper, 1.8 cm³, ID 13.5 mm, depth 14.5 mm
Compatible analyzers	BELSORP MAX X (including HP versions), MAX G, MINI X
BELCRYO X (W × H × D)	450 × 590 × 360 mm, 50 kg (110 lb)
Compressor (W × H × D)	320 × 610 × 450 mm, 75 kg (165 lb)
Power, BELCRYO X	AC 100 – 240 V, 1200 VA, 50/60 Hz
Power, compressor	AC 100 – 120 V, 1500 VA, 50/60 Hz
Standards	CE / UKCA
Installation and training	on site, included in every quotation
Lead time	from 4 weeks, depending on configuration

Download: BELCRYO X datasheet (PDF)

What it lets your BELSORP measure

The datasheet examples, run on a BELSORP MAX X with activated carbon and FAU zeolite:

N₂ at 77.4 K, Ar at 87.3 K	BET surface area and pore size distribution without filling a Dewar
CO₂ at 273 K and 194.7 K	pore analysis and CO₂ uptake for capture and separation materials
Kr at 119.7 K	krypton isotherms at a temperature a liquid coolant cannot give
H₂ at 35 K and 40 K	hydrogen storage on activated carbon under cryogenic conditions
Isosteric heat	from isotherms at several temperatures, for example 77.4, 82.4 and 87.4 K, or H₂ at 35 and 40 K
With XRPD	coupled measurement on powders to watch gated adsorption and phase transitions

Combined with the BELSORP MAX X HP, hydrogen and methane storage and CO₂ separation isotherms can be measured from cryogenic to high temperature and from low to high pressure.

Three kinds of studies it opens

Gas storageHydrogen and methane uptake of MOFs, zeolites and carbons at low temperature, measured at the exact temperature of interest.

Carbon capture and separationCO₂ isotherms for CCUS / CCS and gas separation materials across a broad temperature range.

Heat of adsorptionDifferential isosteric heats from isotherms measured at closely spaced temperatures, with the stability to make the calculation reliable.

Where the BELCRYO X stops — and what to take instead

The BELCRYO X does not measure on its own — it needs a BELSORP MAX X, MAX G or MINI X; for older BELSORP MAX or MAX II analyzers Microtrac asks to be contacted first. It holds three samples in its own 1.8 cm³ copper cells, and its pressure rating is below 1 MPa (G). The compressor is a separate 75 kg unit on AC 100–120 V, so plan floor space and power. If your work is routine BET at 77 K, a Dewar is enough and you do not need it. Microtrac notes that the product may fall under Japanese export control depending on destination and use.

Availability, payment and delivery

Built to orderMatched to your BELSORP analyzer and configured with the cells you need. Lead time is from 4 weeks after a confirmed order, depending on the configuration; the quotation states the date in writing.

How you payAsk for a formal quotation on our letterhead and pay against an invoice. We are registered in SAM.gov as a small business, so federal and university purchasing works the usual way.

What arrivesThe BELCRYO X cryostat, the separate compressor and the CRYO sample cells and gaskets you ordered. Installation and on-site operator training are included in every quotation and carried out by Microtrac’s US service engineers.

Why buy it through Additive Plus

Authorized Microtrac resellerQuotation, order and delivery handled by one team in California

Installation and training includedConnected to your BELSORP on site and your team trained on variable-temperature runs in BELControl — part of every quotation

Compatibility confirmed firstWe check your BELSORP model and configuration before you order

What usually stops people — and the honest answer

“Liquid nitrogen is cheap.”For routine 77 K work it is, and then you do not need a BELCRYO X. It pays off when you need other temperatures — CO₂ at 194.7 K, hydrogen at 35 K, isotherms for isosteric heat — or very long runs without refilling.

“Will it work with our analyzer?”It is specified for the BELSORP MAX X including HP versions, MAX G and MINI X. For a BELSORP MAX or MAX II, Microtrac checks first. We confirm before the quotation.

“How stable is the temperature?”±0.001 K below 100 K and ±0.01 K at 100 K and above, achieved with a vacuum-insulated chamber and radiation shielding.

“How long does it take to cool down?”From 298 K to 35 K in less than 120 minutes, as a reference value; after that measurements can run continuously with no time limit.

Ready when you are

Request a formal quotation

Brand	Microtrac
Technology	Closed-cycle cryostat for gas adsorption
Certification	CE
Weight	110 lb / 50 kg

Product flyer (PDF)

pdf · 2055 KB

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Common questions

Don't see yours? Email [email protected] — NDA standard, typical reply within 4 hours.

What does the BELCRYO X do for a BELSORP analyzer?

It replaces the liquid nitrogen or argon Dewar with a Gifford-McMahon cryocooler and heater, so adsorption isotherms can be measured at any temperature from 35 K to 473 K. Measurements are not limited by a Dewar's holding time.

Which BELSORP analyzers is it compatible with?

The BELSORP MAX X including HP versions, the MAX G and the MINI X, all controlled through BELControl. For the older BELSORP MAX or MAX II, Microtrac asks to be contacted first. We confirm compatibility with your analyzer before quoting.

How stable is the temperature control?

±0.001 K below 100 K and ±0.01 K at 100 K and above. The stability comes from a vacuum-insulated chamber and radiation shielding.

What studies does the temperature range make possible?

Datasheet examples include CO₂ at 194.7 K, Kr at 119.7 K, hydrogen on activated carbon at 35 K and 40 K, and isosteric heat of adsorption from isotherms at several temperatures. It is used for MOF and zeolite gas storage, CCUS / CCS and gas separation research, and can be coupled with X-ray powder diffraction.

How many samples and which gases?

Three samples at once, in copper CRYO cells of 1.8 cm³. Measurable gases are N₂, Ar, Kr, Xe, CO₂, H₂, CH₄, CO and other non-corrosive gases; pressure resistance is below 1 MPa (G).

What does it need in the lab?

The BELCRYO X is 450 × 590 × 360 mm and 50 kg on AC 100–240 V, 1200 VA. The separate compressor is 320 × 610 × 450 mm and 75 kg on AC 100–120 V, 1500 VA. Cooling from 298 K to 35 K takes less than 120 minutes as a reference value.

What is the lead time and what is included?

The BELCRYO X is configured to order and matched to your BELSORP. Lead time is from 4 weeks after a confirmed order, depending on the configuration, and the formal quotation states the date. Installation and on-site operator training by Microtrac's US service engineers are included in every quotation.

How much does a BELCRYO X cost?

The price depends on your analyzer and the cells and consumables you need. Request a formal quotation and you receive configuration, price, payment terms and lead time on our letterhead.

Can we see data on our material first?

Yes. The test analysis of your sample is free; it is measured in Microtrac's US application lab and we go through the report with you before you decide.

Place your order, or talk to an engineer first

Order Microtrac BELCRYO X Cryogenic Unit for BELSORP Analyzers direct, or talk to materials engineer

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