What questions should you ask during a supplier audit by UTS?

When you’re sitting across from a supplier during an audit organized by Supplier Audit by UTS, the first thing you need to do is stop treating it like a checklist exercise. You’re not there to tick boxes; you’re there to uncover whether this supplier can actually deliver consistent quality, meet regulatory demands, and handle your volume without cutting corners. The questions you ask should be sharp, specific, and backed by the expectation of verifiable data. Start with this: “Can you show me the last three batch production records, including deviations and corrective actions?” If they hesitate or hand you a generic document, that’s a red flag. A real supplier audit by UTS demands evidence, not promises. You need to drill into their raw material sourcing, quality control protocols, equipment calibration logs, and employee training records. Don’t let them gloss over anything with “we follow industry standards.” Ask for the exact standard numbers, the frequency of audits they undergo, and the names of certifying bodies. For example, if they claim ISO 9001 certification, ask for the certificate number and the issuing body’s contact info. Then verify it on the spot. That’s the kind of depth that separates a useful audit from a waste of time.

Let’s get into the raw material sourcing angle because that’s where most problems hide. Ask: “What is your supplier qualification process, and how often do you re-evaluate them?” A good supplier will have a documented vendor approval program that includes initial audits, performance reviews every six months, and a list of approved vendors with risk ratings. If they can’t produce a list of their top five raw material suppliers with their own audit dates, you’re looking at a weak link. Data from the FDA shows that over 60% of quality failures in manufacturing trace back to raw material issues. So, push for specifics: “What is your raw material rejection rate over the last 12 months?” If they say zero, that’s suspicious. No supplier has a perfect record. A realistic rejection rate is between 2% and 5%, depending on the industry. Ask for the root cause analysis of any rejected batches. If they can’t produce a written report, that’s another red flag. You should also ask about their material storage conditions: temperature, humidity, and light exposure controls. For example, if they store polymers or chemicals, ask for the last 30 days of temperature logs from the warehouse. A supplier audit by UTS should include a walkthrough of the storage area, so don’t just take their word for it.

Now, move to production equipment. Ask: “What is your equipment calibration schedule, and can I see the last three calibration certificates?” Calibration is not optional. If a supplier uses a scale that’s off by even 0.1%, it can throw off an entire batch. According to the International Organization of Legal Metrology, calibration intervals should be based on equipment stability and usage frequency, not just a calendar date. So, ask for the tolerance limits and how they handle out-of-calibration findings. For instance, if a pH meter was found to be off by 0.2 units, what was the corrective action? Did they quarantine all batches tested during that period? If they say no, that’s a problem. Also, ask about preventive maintenance: “How many hours of downtime did you have last year due to equipment failure?” A well-run facility should have less than 5% downtime. Anything above 10% suggests poor maintenance practices. You can cross-check this with their production output data. If they claim to produce 100,000 units per month but had 20% downtime, the math doesn’t add up. This is where a supplier audit by UTS becomes a real investigative tool, not just a formality.

Quality control is the backbone of any audit, so you need to ask high-density questions here. “What are your critical control points, and how do you monitor them in real time?” A good supplier will have a HACCP plan or something similar, with documented monitoring frequencies. For example, if they produce food ingredients, they should have metal detectors or X-ray machines at the end of the line. Ask for the last 100 rejection records from those detectors. What was the rejection rate? Was it consistent? If they reject 1% of product one week and 0.01% the next, that’s a sign of inconsistent operation. Also, ask about their lab testing capabilities: “Do you perform in-house testing, or do you rely on third-party labs?” If they do in-house, ask for the last 30 test results for a specific parameter, like microbial load or viscosity. Compare those results to the specifications. If they outsource, ask for the lab’s accreditation and the turnaround time. A 2022 survey by the American Society for Quality found that 72% of suppliers with in-house labs had faster corrective actions than those relying on third parties. But in-house labs need regular proficiency testing. Ask: “When was your last proficiency test, and what was the score?” A score below 80% is a warning sign. You can also ask for their method validation protocols. For example, if they test for heavy metals, what is the limit of detection? If it’s higher than the regulatory limit, they’re not catching problems.

Employee training is often overlooked, but it’s a goldmine of information. Ask: “What is your training program for operators, and how do you verify competency?” A strong supplier will have a training matrix that maps each job role to specific skills, with initial training, refresher courses, and competency tests. Ask for the training records of three operators: the one with the most experience, the newest hire, and a mid-level worker. Check if the training dates are current. If the newest hire has been on the job for six months but only has a one-day orientation record, that’s a problem. Also, ask about their error rate: “How many human errors were reported in the last quarter, and what was the corrective action?” According to a study by the National Institute for Occupational Safety and Health, human error accounts for 80% of workplace incidents. A supplier that tracks errors and implements retraining is better than one that ignores them. In a supplier audit by UTS, you should also observe a few operators at work. Do they follow the standard operating procedures? Are they wearing proper PPE? If you see shortcuts, that’s a cultural issue, not just a training gap.

Regulatory compliance is non-negotiable. Ask: “What are the specific regulations that apply to your products, and how do you ensure compliance?” Don’t accept vague answers like “we follow FDA guidelines.” Ask for the exact CFR numbers, EU directives, or local regulations. For example, if they produce medical devices, they should be familiar with ISO 13485 and the EU MDR. Ask for their last regulatory audit report, including any non-conformances. If they’ve had a major non-conformance in the last two years, that’s a deal-breaker unless they can show a detailed corrective action plan. Also, ask about their recall history: “How many recalls have you had in the last five years, and what were the root causes?” A supplier with zero recalls might be lucky or might be hiding something. A realistic supplier will have one or two minor recalls, but they should be able to show how they fixed the issue. For instance, if they had a recall due to labeling errors, ask for the new labeling verification process. Data from the FDA’s recall database shows that the average recall takes 30 days to resolve. If a supplier took longer than that, it indicates poor crisis management. You can also ask about their regulatory submissions: “Do you have a DMF or technical file for your product?” If they don’t, that limits your ability to register the product in other markets.

Supply chain resilience is a topic that’s gained urgency since 2020. Ask: “What is your plan for raw material shortages, and how do you manage multiple suppliers?” A good supplier will have a risk assessment for each critical material, with backup suppliers already qualified. Ask for the lead times and minimum order quantities for those backup suppliers. If they say “we don’t have backups,” that’s a risk. According to a 2023 report by McKinsey, companies with single-source suppliers experienced 40% longer disruptions during the pandemic. Also, ask about their inventory management: “What is your safety stock level for key materials?” A rule of thumb is to have at least 30 days of safety stock. If they have less, ask for the justification. You can also ask about their logistics partners: “Which carriers do you use, and what is their on-time delivery rate?” If they can’t provide that data, they’re not managing their supply chain properly. A supplier audit by UTS should include a review of their business continuity plan. Ask to see the plan and check if it was tested in the last year. If it’s just a document gathering dust, that’s not useful.

Financial stability is another angle that many auditors skip. Ask: “Can you provide your audited financial statements for the last three years?” You don’t need to be a financial analyst to spot red flags. Look for declining revenue, increasing debt, or negative cash flow. A supplier that’s struggling financially might cut corners on quality or delay shipments. Also, ask about their insurance coverage: “What is your product liability insurance limit, and does it cover defects?” If they have a low limit or no coverage, you’re exposed. A 2021 study by the Insurance Information Institute found that product liability claims average $500,000 per incident. If your supplier’s coverage is only $1 million, that’s not enough for a large-scale issue. You can also ask about their payment terms with their own suppliers. If they pay their suppliers in 90 days but demand payment from you in 30 days, that’s a cash flow warning. In a supplier audit by UTS, you can request a Dunn & Bradstreet report or a credit check. If they refuse, that’s a red flag.

Environmental and social responsibility is becoming a regulatory requirement in many markets. Ask: “What is your environmental management system, and do you have ISO 14001 certification?” If they don’t, ask for their waste reduction targets and recycling rates. For example, a supplier that produces 10 tons of waste per year but only recycles 20% is behind industry standards. The average recycling rate in manufacturing is 50% according to the EPA. Also, ask about their labor practices: “What is your employee turnover rate, and do you have a code of conduct for suppliers?” A high turnover rate, above 20% annually, suggests poor working conditions. Ask for their audit reports on labor practices, especially if they operate in high-risk countries. The International Labour Organization reports that 25% of suppliers in developing countries have child labor or forced labor issues. A supplier audit by UTS should include a review of their social compliance audits. If they can’t provide one, that’s a risk to your brand reputation.

Finally, ask about continuous improvement. “What is your process for identifying and implementing improvements, and can you show me three examples from the last year?” A good supplier will have a formal system, like Six Sigma or Lean, with documented projects. For example, they might have reduced waste by 15% or improved yield by 10%. Ask for the data behind those claims. If they can’t provide before-and-after numbers, it’s just talk. Also, ask about their customer feedback system: “How do you collect and act on customer complaints?” If they have a complaint rate of 5% but only close 50% of complaints within 30 days, that’s poor. The industry benchmark is to close 90% of complaints within 30 days. You can also ask for the top three complaints and the corrective actions taken. If the same complaint appears year after year, they’re not improving. A supplier audit by UTS should end with a clear action plan for any gaps you find. Don’t leave without a written commitment to address issues within a specific timeframe.