Made to order
- Installation & integration setup and integration with your BELSORP workflow
- Protocol guidance degassing temperature and time for your samples
Microtrac BELPREP VAC Vacuum Degasser for Gas Adsorption
Vacuum degasser for BELSORP gas adsorption analyzers — prepares 3 or 6 samples at up to 430 or 450 °C while the analyzer measures.
- Vacuum / heat degassing, flow / heat under inert gas as an option
- Add-on for BELSORP MINI X, MAX G and MAX X analyzers
- Installation and on-site training included · free test analysis of your sample
- Configured to order · lead time from 4 weeks
What your adsorption lab actually checks
Pretreatment off the critical path
Degassing 3 or 6 samples in parallel while the analyzer measures removes the main throughput bottleneck — and consistent vacuum-and-heat prep is what keeps BET and pore numbers reproducible.
A materials engineer on the line
Degassing-protocol setup and configuration from engineers who run surface-area and porosity analysis in-house at Additive Plus.
- BELPREP VAC II (3 sample ports, up to 430 °C) or BELPREP VAC III (6 sample ports, up to 450 °C)
- Vacuum / heat degassing as standard; flow / heat degassing under inert gas as an option
- Temperature accuracy ±5 °C on both models
- VAC II: automatic purge-gas stop and automatic pumping-speed switching against sample scattering
- VAC III: programmable temperature control
- Installation and on-site operator training — included in every quotation
What the BELPREP VAC is
The BELPREP VAC is a vacuum degasser from Microtrac — an accessory to a BELSORP gas adsorption analyzer, not a measuring instrument. Before a surface area or pore size measurement, adsorbed water and gases have to be removed from the sample by heating it under vacuum or in an inert gas flow. The BELPREP VAC does this on a separate station, so samples are prepared at the same time as the analyzer measures.
Microtrac names the BELPREP VAC II and VAC III as the external pretreatment for the BELSORP MINI X and BELPREP equipment for the BELSORP MAX G; the BELSORP MAX X also takes externally pretreated samples. The sample cell is degassed on the BELPREP VAC and then moved to the analyzer port.
Specifications
| Type | vacuum degasser with flow-degassing option |
| Models | BELPREP VAC II · BELPREP VAC III |
| Pretreatment ports | 3 (VAC II) · 6 (VAC III) |
| Vacuum / heat degassing | yes, both models |
| Flow / heat degassing | option, both models |
| Maximum temperature | 430 °C (VAC II) · 450 °C (VAC III) |
| Temperature accuracy | ±5 °C |
| Programmable temperature control | VAC III |
| Automatic purge-gas stop | VAC II |
| Automatic pumping-speed switching | VAC II (prevents sample scattering) |
| Dimensions (W × H × D) | VAC II 321 × 158 × 363 mm · VAC III 400 × 317 × 383 mm |
| Weight | 15 kg (33 lb) |
| Gas supply | N2 0.1 MPa (G), 1/8″ Swagelok |
| Power | AC 100 – 120 V or 200 – 240 V, 50/60 Hz · VAC II 530 VA, VAC III 630 W, without vacuum pump |
| Standards | CE |
| Installation and training | on site, included in every quotation |
| Lead time | from 4 weeks, depending on configuration |
Download: BELPREP VAC datasheet (PDF)
VAC II or VAC III — which one to take
The two models differ in capacity, top temperature and automation. Pick by how many samples you prepare and how fragile they are:
| Samples per run | VAC II: 3 · VAC III: 6 |
| Top temperature | VAC II: 430 °C · VAC III: 450 °C |
| Temperature program | VAC III only: programmable heating |
| Fine powders | VAC II only: automatic pumping-speed switching keeps fine samples from being drawn out of the cell |
| Purge gas | VAC II only: automatic purge-gas stop |
| Bench space | VAC II: 321 × 158 × 363 mm · VAC III: 400 × 317 × 383 mm |
A four-port BELSORP such as the MINI X or MAX X fills fastest from a six-port VAC III; a single-sample MAX G is usually well served by a three-port VAC II.
Where the BELPREP VAC stops — and what to take instead
The BELPREP VAC only prepares samples; it does not measure. Its top temperature is 430 °C (VAC II) or 450 °C (VAC III) — the in-situ heater of the BELSORP MAX X reaches 550 °C if your material needs more. Moving the cell from the degasser to the analyzer exposes it briefly; for sensitive, hydrophilic samples Microtrac recommends pretreatment at the measuring port with the in-situ heater of the MINI X, MAX G or MAX X. The BELSORP MR 1 pretreats its samples itself, so it does not need a BELPREP VAC. The power figures exclude the vacuum pump; the quotation states which pump is supplied.
In pictures
Availability, payment and delivery
Why buy it through Additive Plus
What usually stops people — and the honest answer
Ready when you are
| Brand | Microtrac |
| Technology | Vacuum / flow degassing (sample pretreatment) |
| Certification | CE |
Send us a representative sample. The test measurement in Microtrac's US application lab is free, and we go through the results with you.
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· Lead time from 4 weeks · installation includedWhat our customers say
“Harry and team were professional, effective communicators as we set up the order, then they executed quickly and produced an amazing product for us at a very competitive price. Am looking forward to our next print w Additive Plus!”
“Great 3D printing service and the resin parts look super smooth and clean. Really happy with how everything turned out!”
“Harry was very professional and helped me out with my 3D printing needs and explained what options I have in terms of filaments such as PEEK. Highly recommended.”
“I needed a 3D enclosure printed urgently in a specific time period, they did great!”
Common questions
Don't see yours? Email [email protected] — NDA on request, typical reply within 4 hours.
Why do samples have to be degassed before a BET measurement?
How many samples does the BELPREP VAC prepare at once?
What degassing modes does it offer?
Which analyzers does it work with?
What is the difference between VAC II and VAC III?
What is the lead time and what is included?
How much does a BELPREP VAC cost?
Can I test my sample before buying?
Place your order, or talk to an engineer first
Order Microtrac BELPREP VAC Vacuum Degasser for Gas Adsorption direct, or talk to materials engineer