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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryIndustryChemical IndustryZurichUniSieve AG
UniSieve AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of UniSieve is the development and provision of molecular separation solutions based on membranes for various applications, particularly: Carbon Capture, Chemical Purification, Energy Gas Separation, Hydrogen Purification, and Chemical Feedstock Purification. These solutions aim to increase energy efficiency, reduce CO2 emissions, and lower production costs.

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Offering

Products & services

Industry:Chemical Industry
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UniSieve AG

✓ Offered5
Gas Separation Membranes
Molecular sieving membranes for high-precision gas separations, integrated into standard membrane cartridges and tuned for challenging applications with low energy demand.
Carbon Capture
Point-source carbon capture solutions for waste-to-energy plants, cement plants and other flue-gas applications, described as modular, fully electrified and chemical-free.
Chemical Feedstock Purification
Membrane add-on units for hydrocarbon purification, including propylene and ethylene purification, propylene recycling and olefin/paraffin separations.
Energy Applications
Add-on units for hydrogen, biogas and methane purification, hydrogen deblending and power-to-gas separation upgrades for existing or new infrastructure.
Custom Separations
Tailor-made molecular sieving membrane solutions for custom gas-gas, liquid-liquid and liquid-gas separation challenges, with pore size tuned to the compounds involved.
Trust & reputation

ranQ Trust Score of UniSieve AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 58% · As of October 2026

Without public customer reviews the score stays capped.

UniSieve AG has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
UniSieve AG scores 76.6 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.79.212%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
UniSieve AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
UniSieve AG scores 65.0 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.100.04%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.30.04%
Qualifications+0.00

UniSieve AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 58%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Press

Media

April 26, 2023Media
USD 5.5m to unlock decarbonizing opportunities for heavy industry
startupticker.ch
November 4, 2020Media
UniSieve banks USD 4.6 million
startupticker.ch
September 12, 2018Media
ETH Spin-off UniSieve gewinnt 130‘000 Franken bei Venture Kick Finale
startupticker.ch

Knowledge

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Location

Binzstrasse 9
8045 Zurich
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
Closed
Thu
08:00 - 17:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-402.194.845
Founded
2018 · 8 years
Last commercial register change
June 2, 2026
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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