Objectives

The primary objective is to secure a qualified supplier for Trypsin (1:250) to serve as a cell culture dissociation reagent. The procurement aims to obtain biologically compliant products while adhering to South African public procurement legislation, emphasizing value for money, quality assurance, and socio-economic transformation through structured preference scoring.

Scope

The tender encompasses the supply of two units of Trypsin powder, with each unit weighing 100 grams. Suppliers must demonstrate recent commercial experience by submitting verifiable evidence of supplying identical or similar goods within the last 24 months. All bids must be electronically submitted via the designated procurement portal in PDF format and remain subject to the Government Procurement General Conditions of Contract (July 2010). Evaluation follows a weighted scoring model prioritizing competitive pricing and specific socio-economic goals.

Technical Requirements

• Product Identity: Difco Trypsin 1:250 or a directly equivalent alternative.
• Concentration & Physical State: 250X concentration, supplied exclusively as a powder.
• Biological Source & Testing: Extracted from porcine pancreas and validated through in vitro bioassay to confirm enzymatic activity.
• Purity Standards: Must exhibit low endotoxin levels and contain no phenol red or additional chemical additives.
• Intended Use: Optimized for dissociating mammalian adherent cell cultures.
• Supporting Documentation: Bidders must attach detailed product specifications, manufacturer catalogues, Certificates of Analysis (COA), or technical data sheets.
• Experience Verification: Minimum of two stamped invoices, delivery notes, or formally signed reference letters confirming past supply within the preceding 24 months.

Skills Requirements

The tender does not mandate specialized academic or professional certifications. Instead, suppliers are expected to possess standard commercial and logistical competencies, including:

• Proven capability in sourcing, storing, and distributing temperature-sensitive biological reagents in compliance with quality management standards.
• Proficiency in navigating electronic procurement systems, accurately completing mandatory Standard Bid Document (SBD) forms, and uploading required attachments in strict PDF format.
• Understanding of South African preferential procurement regulations, enabling correct calculation and documentation of socio-economic preference point claims.
• Robust supply chain administration skills to ensure timely delivery, accurate invoicing, and full contractual compliance throughout the performance period.

Clarification of Key Terms

80/20 Preference Point System: A statutory South African procurement evaluation framework where 80 points are awarded based on the lowest acceptable price, and up to 20 points are allocated for specific socio-economic goals (e.g., ≥51% black ownership, ≥30% women ownership, or verified disability status). Failure to submit supporting proof results in zero points for these categories.

In Vitro Bioassay: A controlled laboratory test conducted outside a living organism to quantitatively measure trypsin proteolytic activity, ensuring the product meets specified potency thresholds before release.

Low Endotoxin Level: Refers to minimal concentrations of lipopolysaccharides derived from Gram-negative bacteria. This specification is critical for mammalian cell culture, as elevated endotoxins can trigger cellular stress, inflammation, or culture failure.

SBD Forms: Standard Bid Document templates mandated by South African public sector procurement. They require bidders to declare conflicts of interest, disclose corporate ownership structures, certify non-collusion, and formally claim preference points under the Preferential Procurement Policy Framework Act.