Precision Laboratory Standards
vs “DIY” Preparation

ISO 5 controlled work zone

Laminar-flow workstations reduce airborne particulate exposure during controlled processing.

Validated SOPs & traceability

Repeatable procedures and full batch records document materials, processing and checks.

Calibrated precision equipment

Controlled dispensing and calibrated balances support repeatable, verified fill quantities.

Documented aseptic diluents

Sterile diluents supplied with certificates of analysis: bacteriostatic water (0.9% benzyl alcohol) or 0.9% sodium chloride, as specified.

Controlled aseptic filling

Filling with 0.22 µm PTFE vent barriers supports pressure equalisation and controlled air exchange.

Analytical identity & purity checks

HPLC and mass-spectrometry assessment supports peptide identity and purity verification against specification.

Uncontrolled environments

Domestic surfaces and air can introduce bacteria, mould spores, dust and pet dander.

No standard procedures

Informal online guidance and undocumented handling lead to batch-to-batch variability.

Inaccurate fill quantities

Visual estimates and uncalibrated consumer scales can produce inconsistent results.

Unverified diluents

Expired, non-sterile or home-filtered water can compromise sample stability and introduce contamination.

Compromised closures

Improvised stoppering and sealing may introduce leaks, rubber particles and unwanted air exposure.

Unconfirmed purity

Claims without batch-specific analytical evidence leave identity and purity unverified.