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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryHealthcareMedical LaboratoriesSchlierenLabor Zollinger AG
Labor Zollinger AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Labor Zollinger AG is the microbiological analysis and consulting of companies from the pharmaceutical, cosmetics, and medical technology sectors. This includes, in particular: Microbiological purity testing, Preservation/load tests, Hygiene monitoring (air, surfaces), Differentiation of microorganisms, Consulting on sterility testing and microbial contamination, Determination of microbial contamination of medical devices and packaging materials (bioburden). The company offers these services as an accredited laboratory according to ISO/IEC 17025 and in accordance with Good Manufacturing Practice (GMP).

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Products & services

Industry:Medical Laboratories
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3.9/5

Labor Zollinger AG

✓ Offered5
Microbiological analyses for medical technology
Microbiological testing for medical devices and packaging materials, bioburden determination, hygiene monitoring, biocontamination control in cleanrooms, sterility tests and microorganism differentiation.
Microbiological analyses for pharma and cosmetics
Microbiological purity tests, preservation and challenge tests, hygiene monitoring, biocontamination control in cleanrooms and microorganism differentiation for pharmaceutical and cosmetic companies.
Accredited microbiological testing under ISO and Ph. Eur.
Accredited microbiological testing for medical devices, pharmaceutical products, food, feed, cosmetics, consumer goods and water samples under ISO standards and the European Pharmacopoeia.
Quality control of medicinal products and active substances
Microbiological quality control of medicinal products and pharmaceutical active substances within the licensed GMP scope, supported by authority-supervised ISO/IEC 17025 accreditation.
Analysis order and sample submission
Online form for analysis orders, sample submission by post, execution of analyses and delivery of the analysis report by post, fax or email.
Trust & reputation

ranQ Trust Score of Labor Zollinger AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Labor Zollinger AG scores 56.8 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.73.124%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.35.310%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.35.08%
Labor Zollinger AG scores 83.5 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.95.212%
  • 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%
Labor Zollinger 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%
Labor Zollinger AG scores 25.7 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 35.25.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Labor Zollinger AG reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 3 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 3 reviews across all connected sources

Sources
GGoogle53
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Knowledge

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Comparisons

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Location

Grabenstrasse 1
8952 Schlieren
Opening hours
Mon
08:00 - 12:00, 13:15 - 16:00
Tue
08:00 - 12:00, 13:15 - 16:00
Wed
08:00 - 12:00, 13:15 - 16:00
Thu
08:00 - 12:00, 13:15 - 16:00
Fri
08:00 - 12:00, 13:15 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-213.205.848
Founded
2013 · 13 years
Last commercial register change
April 11, 2023
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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