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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,765 companies indexed · Last updated: today
DirectoryIndustryGlass, Ceramics, Stone & Construction Materials IndustryUntervazGriso Prüflabor AG
Griso Prüflabor AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Griso Prüflabor AG is the testing and monitoring of building materials, particularly in the field of concrete, mortar and aggregates. This includes quality control of fresh and hardened concrete on construction sites, the inspection of aggregates, measurements of load-bearing capacity on construction sites, as well as the control of asphalt compaction.

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Products & services

Industry:Glass, Ceramics, Stone & Construction Materials Industry
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Griso Prüflabor AG

✓ Offered6
Construction material testing
Construction material testing in the field of concrete, mortar and aggregates; fresh concrete testing, hardened concrete testing, testing of aggregates and unbound mixtures.
Fresh concrete testing
Fresh concrete testing in the plant or on the construction site; air content, consistency measurements, bulk density, water content and water-cement value, yield test, as well as air and concrete temperature.
Hardened concrete testing
Hardened concrete testing in the laboratory; compressive strengths on cubes, core samples and prisms, resistance to freeze-thaw and de-icing salts, water permeability, watertightness, resistance to chlorides and to carbonation.
Aggregate testing for concrete and pavements
Sieve analyses and further tests on aggregates for concrete and pavements; processing in the sieving room and separate evaluation for concrete and pavement.
Testing of unbound mixtures
Sampling and testing of unbound mixtures; water content, sieve and sedimentation analyses, material composition, compaction tests and plate bearing tests on construction sites.
Additional services
Compile WPK documentation, mix calculations for customer-specific sieve curves, reports on tests and measurements, consulting on concrete and aggregates.
Trust & reputation

ranQ Trust Score of Griso Prüflabor AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Griso Prüflabor 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.
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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%
Griso Prüflabor AG scores 85.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • 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%
Griso Prüflabor AG scores 83.3 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).83.322%
Griso Prüflabor AG scores 17.1 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.17.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Griso Prüflabor 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 54%, 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.

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Location

Kieswerkstrasse 6
7204 Untervaz
Opening hours
Mon
07:00 - 17:00
Tue
07:00 - 17:00
Wed
07:00 - 17:00
Thu
07:00 - 17:00
Fri
07:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-100.020.397
Founded
1978 · 48 years
Last commercial register change
March 26, 2024
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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