What to Check Before Buying an HPLC System: A Purchasing Checklist for Pharma QC Labs
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Many labs buying their first HPLC system get pulled toward surface-level factors — brand, appearance, how big the touchscreen is — and end up overlooking the technical parameters that actually determine whether the instrument performs well. This checklist walks through detection sensitivity, column-oven stability, and day-to-day maintenance convenience, in that order.
1. Detector Sensitivity and Baseline Stability
The UV detector is the core of HPLC quantitation. Check these parameters:
- Wavelength range and accuracy: determines the range of compounds the system can detect. Take the LC210 HPLC System: wavelength range 190–700 nm, wavelength accuracy ±1 nm, wavelength repeatability ≤0.2 nm.
- Baseline noise and drift: directly affects whether low-concentration components can be accurately detected. LC210 baseline noise ≤5×10⁻⁶ AU (254 nm, empty cell); baseline drift ≤5×10⁻⁵ AU/h (254 nm, empty cell).
- Minimum detectable concentration: LC210's minimum detectable concentration, measured with naphthalene as the sample and methanol as the carrier at 254 nm, is ≤5×10⁻⁹ g/mL — specific test-condition numbers like this are far more useful than a vague "high sensitivity" claim. Ask any vendor what conditions their sensitivity numbers were measured under.
2. Column-Oven Temperature Precision
Retention-time reproducibility largely depends on how stable the column temperature is. Check two numbers: control accuracy and temperature stability. The LC210's column thermostat has a control accuracy of ±1°C, a range of ambient+10°C to 80°C (1°C increments), and a temperature stability of ≤0.2°C. If your lab's methods are temperature-sensitive (chiral separations, certain gradient methods), these two figures are worth checking closely.
3. Pump Flow Precision and Pressure Rating
Flow stability directly affects quantitative reproducibility. The LC210's flow-rate setting range is 0.001–9.999 mL/min, flow stability ≤0.3%, and maximum output pressure 45 MPa. The reciprocating series-flow constant-flow pump paired with a high-performance buffer to smooth pulsation is the kind of design detail that determines whether flow stays stable and precise over long-term use.
4. Data Handling and Audit-Trail Capability
Different labs have different compliance requirements: routine QC may only need basic data recording and printing; if your lab needs electronic-record audit trail, confirm whether the workstation software supports it — and whether it's standard or optional. The LC210's 7" color touchscreen with built-in workstation software supports bidirectional operation, with audit-trail capability available as an add-on — confirm this before purchase so you're not caught needing an extra configuration after delivery.
5. Day-to-Day Maintenance Convenience
An easy factor to overlook, but one that affects long-term cost of ownership: how easy are key components to clean and maintain, and can abnormal conditions be flagged in time. The LC210's plunger rod and other key wear parts support in-line cleaning that extends seal life; process-control monitoring flags blockages and leaks, reducing the risk of unplanned downtime caused by deferred maintenance.
Frequently Asked Questions
Q: Is a vague "high sensitivity" claim useful when buying an HPLC system?
A: Not particularly. It's more useful to ask the vendor for actual data under specific test conditions (sample, mobile phase, wavelength) and compare those against your lab's real testing needs.
Q: Is audit trail standard on all HPLC systems?
A: Not necessarily — many entry-level configurations treat it as an add-on. It's worth confirming explicitly before purchase to avoid surprises in your compliance planning.
Q: Does the LC210 have CE certification?
A: Yes, the LC210 is CE certified.
Q: How do you judge an HPLC system's durability?
A: Look at whether key wear parts (pump plunger rods, seals) are designed with cleaning and process-monitoring functions — details like this say more about long-term reliability than a spec sheet alone.
Learn More
Want to check whether your lab's testing needs match the LC210's technical specifications? Contact our team, or view the LC210 HPLC System product page for full specs.