NABL · ISO · BIS · QCI Consultancy

Quality, Summed
to Perfection.

We guide laboratories and businesses across India through NABL (ISO/IEC 17025) accreditation, ISO certification, BIS registration and QCI empanelment — with the precision of a process built for zero variation.

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UCL LCL PROCESS CONTROL — CONVERGING TO TARGET
Who we are

Story & Philosophy Behind Sigma

At Quality Sigma Consultants, Sigma — the mathematical symbol for summation — reflects how we work. It stands for the integration of planning, execution and continual improvement, uniting every part of an organisation toward one outcome: accreditation that holds up under scrutiny.

"Quality, Summed to Perfection" isn't a slogan — it's how we structure every engagement, from gap assessment to surveillance audit.

Σ / integration

Sigma as Integration

Quality is the result of harmony among processes, people, systems and standards. We build one unified framework where every part contributes to a flawless result.

Σ / precision

Sigma as Precision

Inspired by Six Sigma principles, we lean on data-driven methods to reduce variation and ensure consistency — tailored to your lab or facility.

Σ / progress

Sigma as Progress

Quality is a journey, not a certificate. We help organisations adapt and improve with every audit cycle and every new standard.

Σ / culture

Sigma as Culture

Our mantra becomes a cultural shift — quality embedded in every process and every person, not filed away after the audit ends.

Mission

To empower individuals and organisations with exceptional accreditation and compliance solutions — creating sustainable impact and driving measurable improvement in the quality of testing, calibration and manufacturing across India.

Vision

To be a trusted, national name in quality consultancy — recognised for technical rigour, honest guidance and a culture of inclusivity, sustainability and long-term partnership with every client we serve.

What we do

Our Services

End-to-end consultancy across the accreditations that matter most to labs, manufacturers and service providers.

NABL Accreditation (ISO/IEC 17025)

Gap assessment, documentation, internal audits and hand-holding through NABL assessment for testing and calibration laboratories.

Full details & download

ISO 9001 / 14001 / 45001

Quality, environmental and occupational health & safety management system implementation and certification support.

Full details & download

BIS Registration

Bureau of Indian Standards licensing and product certification, from application to factory inspection readiness.

Full details & download

QCI Empanelment

Support for Quality Council of India empanelment and scheme-specific compliance for inspection and certification bodies.

Full details & download

Documentation & SOPs

Quality manuals, SOPs, calibration records and uncertainty budgets written to withstand assessor scrutiny.

Full details & download

Internal Audits & Training

Mock assessments, internal auditor training and staff competency programs to keep certifications audit-ready year-round.

Full details & download

ISO 15189 (Medical Laboratories)

NABL accreditation to ISO 15189 for medical/clinical laboratories — covering pre-examination, examination and post-examination processes, quality & competence.

Full details & download
Why choose us

Certified consultants. Tailored process. No shortcuts.

  • Experienced consultantsCertified ISO consultants with years of cross-industry experience, having guided hundreds of businesses to certification.
  • Tailored solutionsEvery business is different — our consultancy is scoped to your specific scope of accreditation and risk profile.
  • Client-centric approachWe prioritise your goals and build long-lasting relationships, not one-off transactions.
  • Cost-effectiveDesigned to streamline your operations and save money in the long run, not just pass an audit once.
  • End-to-end supportFrom initial assessment to ongoing maintenance and surveillance audits, we stay with you.
  • Continuous improvementWe don't stop at certification — we help embed a culture that maintains standards long term.
Trust & compliance

Certification & Compliance

QUALITY SIGMA CONSULTANTS • VERIFIED • QUALITY SIGMA CONSULTANTS • VERIFIED •

Udyam Registered

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QUALITY SIGMA CONSULTANTS • VERIFIED • QUALITY SIGMA CONSULTANTS • VERIFIED •

GST Compliant

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QUALITY SIGMA CONSULTANTS • VERIFIED • QUALITY SIGMA CONSULTANTS • VERIFIED •

Trade License Holder

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QUALITY SIGMA CONSULTANTS • VERIFIED • QUALITY SIGMA CONSULTANTS • VERIFIED •

Guaranteed Customer Satisfaction

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QUALITY SIGMA CONSULTANTS • VERIFIED • QUALITY SIGMA CONSULTANTS • VERIFIED •

Successful Partnerships

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Client feedback

What Our Clients Say

"Quality Sigma took our calibration lab from first draft documentation to a successful NABL assessment in under five months. Their auditors know exactly what an assessor will flag."

Lab Quality ManagerTesting & Calibration Laboratory, West Bengal

"What stood out was the follow-through — they didn't disappear after the certificate arrived. Our internal audit schedule is still built on the framework they set up."

Operations HeadFood Testing Laboratory, Odisha

"We needed BIS registration on a tight timeline. The team laid out exactly what documents were missing and chased it with us until the factory inspection was scheduled."

Plant ManagerManufacturing Unit, Jharkhand
PHARMACEUTICAL LABSFOOD TESTING LABSCALIBRATION LABSENVIRONMENTAL TESTINGTEXTILE TESTINGMEDICAL DIAGNOSTICSCONSTRUCTION MATERIALSELECTRICAL & ELECTRONICS
Our clientele

Trusted By Laboratories & Businesses Across India

A snapshot of the organisations we've guided through NABL, ISO, BIS and QCI accreditation.

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Get in touch

Start Your Accreditation Journey

Let Quality Sigma Consultants be your trusted partner in achieving NABL, ISO, BIS and QCI compliance.

Quality Sigma Consultants

Address226, B M Roy Road, Kolkata – 700008, West Bengal, India
Office Hours Monday – Saturday: 10:00 AM – 6:30 PM
Sunday & Public Holidays: Closed

Quality Sigma Consultants

226, B M Roy Road, Kolkata – 700008, West Bengal, India

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