Certificate walls are a fixture of the pharma contract manufacturing sales process: WHO-GMP framed in reception, ISO certificates in the conference room, Schedule M compliance declared in every brochure. Most of them are real. Some are current. A smaller number tell you what you actually need to know about whether this facility will consistently manufacture your product to specification.
This guide cuts through the certificate landscape to focus on two things: what each certificate actually confirms, and what documents tell you more than any certificate can.
Evaluating a specific manufacturer?
Use this guide alongside our Buyer’s Due-Diligence Checklist and our detailed Quality Control Guide for a complete evaluation framework. See the Revised Schedule M Guide for compliance specifics.
The Three Main Certificates — What Each Actually Confirms
WHO-GMP Certificate
What it confirms:
A WHO-GMP (Good Manufacturing Practice) certificate confirms that a facility was inspected against WHO’s GMP guidelines and met the required standards at the time of inspection. The inspection covers facility layout, equipment qualification, process validation, documentation systems, quality control laboratory, and personnel training — at a point in time.
What it doesn’t confirm:
It says nothing about what’s happening between inspections. It doesn’t confirm that the specific molecule you want to manufacture is within the facility’s proven capability. And — critically — it only covers the dosage forms listed in the scope.
The scope page is what matters most:
| Scope Entry | What It Covers |
|---|---|
| Oral Liquids (Non-Sterile) | Syrups, solutions, suspensions |
| Semi-Solid Preparations | Creams, ointments, gels |
| Tablets and Capsules | Compressed and filled oral solids |
| Nasal and Otic Preparations | Nasal sprays, ear drops |
| Parenteral Preparations | Injectables — sterile manufacturing |
Your product must be explicitly listed in the scope. If your product is a nasal spray and the certificate scope says “Oral Liquids” only — the certificate is irrelevant to your product category.
Schedule M Compliance
What it confirms:
Schedule M compliance, under India’s Drugs & Cosmetics Act, is the mandatory GMP standard that every licensed pharmaceutical manufacturer must meet. It covers facility requirements (layout, clean rooms, HVAC), equipment qualification, process validation, documentation (BMR, SOP, QC records), quality management systems, and personnel requirements.
The Revised Schedule M (2023) updated these requirements significantly:
| Revised Schedule M Addition | What It Changes |
|---|---|
| Pharmaceutical Quality System (PQS) | Formal quality system now mandatory, not just documentation |
| Quality Risk Management (QRM) | Proactive risk identification required across production |
| ALCOA+ Data Integrity | All records — electronic and paper — must meet strict traceability standards |
| Lifecycle Validation | Equipment validation is ongoing, not a one-time event |
What it doesn’t confirm:
Like WHO-GMP, Schedule M compliance is verified during inspections. Ongoing compliance between inspections depends on the facility’s internal discipline.
ISO 9001:2015
What it confirms:
ISO 9001:2015 is a quality management system standard — it confirms that a facility has documented its processes, has mechanisms for identifying non-conformance, and has management review cycles in place. It applies to any industry, not just pharmaceuticals.
What it doesn’t confirm:
ISO 9001 contains no pharmaceutical-specific requirements. It doesn’t specify cleanroom standards, batch documentation format, microbiological testing requirements, or analytical method validation. It’s a meaningful process framework, but it’s not a substitute for WHO-GMP or Schedule M compliance.
The Certificate Comparison Table
| Certificate | Issued By | Pharma-Specific? | Inspection-Based? | Scope-Limited? |
|---|---|---|---|---|
| WHO-GMP | State Drug Authority | Yes | Yes — point-in-time | Yes — check scope page |
| Schedule M | State Drug Authority | Yes | Yes — mandatory legal requirement | Covered by drug license scope |
| ISO 9001:2015 | Private certification body | No | Yes — annual surveillance | No — general management systems |
The Documents That Tell You More Than Certificates
Once you’ve verified that the certificates are genuine, current, and cover your product category, shift your attention to operational evidence. Three documents tell you more about a manufacturer’s actual daily quality discipline than any certificate does.
1. The Certificate of Analysis (COA)
A COA for a commercial batch tells you what the manufacturer actually tested, what results they got, and whether the batch met its specifications. Request a sample COA for a product similar to yours and check:
- All pharmacopoeial tests present: Assay, dissolution, microbial limits, pH (for liquids), viscosity (for suspensions), spray pattern (for nasal sprays)
- Actual results, not just “passes”: A COA that says “Complies” instead of giving the actual number is a documentation quality red flag
- QP signature and date: Confirms a Qualified Person reviewed and released the batch
- License number reference: Ties the batch to a valid manufacturing license
2. The Batch Manufacturing Record (BMR)
A BMR (or a redacted sample of one) shows you the discipline of the manufacturing documentation process. Check:
- Is it contemporaneous? (Times and initials recorded at the time of each step, not filled in after the run)
- Are there corrections done correctly? (Single line through error, initial, and date — no correction fluid)
- Is the yield calculation present and verified by a second person?
- Are raw material lot numbers and test report references present?
A manufacturer who won’t share a redacted BMR sample is a manufacturer who doesn’t want you to see their documentation quality. That’s an answer in itself.
3. The OOS Investigation Procedure
Ask: “Can you walk me through what happens when a batch test result falls outside specification?”
A manufacturer with a real OOS procedure will describe Phase 1 (laboratory investigation to rule out assignable error) and Phase 2 (full manufacturing investigation involving BMR review, environmental monitoring review, and raw material lot tracing) — and will be able to name the SOP by its document number. They’ll confirm that the batch is quarantined throughout the investigation and that no rework-to-pass is permitted.
A manufacturer who says “we re-test until it passes” or looks confused by the question has answered it.
How Saar Biotech’s Certificates Stack Up
Our manufacturing facility at EPIP Phase-1, Baddi operates under:
- WHO-GMP Certificate covering Oral Liquids (Non-Sterile) and Nasal/Otic Preparations — scope-matched to our core product categories
- ISO 9001:2015 Certification for our quality management system
- Schedule M Compliance under current Himachal Pradesh State Drug Authority licensing, updated to Revised Schedule M requirements
We make sample COAs, redacted BMR pages, and our OOS investigation procedure available to prospective partners on request — before any commitment is made. We welcome independent facility audits as a standard part of the partnership evaluation process.
Explore our manufacturing facilities:
- Saar Biotech Manufacturing Unit, Baddi — liquid orals and nasal sprays
- DM Pharma Manufacturing Unit — tablets and capsules
Browse our product range:
Our detailed quality control systems — including in-process testing protocols, ALCOA+ data integrity implementation, and analytical instrumentation — are documented in our Quality Control Guide.
Conclusion
Certificates are the starting point of a manufacturer evaluation, not the endpoint. They confirm a facility met defined standards at an inspection — they don’t tell you what’s happening in the QC laboratory this week. For that, you need operational evidence: a current COA with real numbers, a BMR sample that reflects genuine contemporaneous documentation, and an OOS procedure that a member of their quality team can walk you through from memory.
Manufacturers who are proud of their quality systems answer these requests quickly. Manufacturers who aren’t will find reasons not to.
Ready to evaluate Saar Biotech’s quality credentials directly?