Objectives

The primary objective of this tender is to procure high-precision laboratory micropipettes and automatic pipette fillers to support accredited laboratory operations. The procurement aims to secure reliable, accurate, and fully compliant fluid-handling equipment that meets stringent international metrology standards while adhering to South African public procurement regulations.

Scope

The scope covers the supply, delivery, and initial support of single-channel fixed and adjustable volume micropipettes alongside automatic pipette fillers. All supplied items must be brand-new and accompanied by comprehensive documentation, including calibration certificates, warranty terms, and product specifications. The contract includes delivery to a designated facility, acceptance testing upon arrival, and post-delivery technical support. Suppliers must also demonstrate compliance with preferential procurement policies, maintain valid business registrations, and fulfill all mandatory municipal bidding documentation requirements.

Technical Requirements

• Equipment must comply with ISO 8655 standards for manual volumetric instruments.
• Adjustable-volume micropipettes require calibration certificates issued by a SANAS-accredited laboratory conforming to ISO/IEC 17025. Fixed-volume models are exempt from mandatory calibration certificates.
• Accuracy tolerances must not exceed ±1.5% for volumes greater than 1 mL and ±1.0% for volumes up to 1 mL, with tests corrected using the Z-factor.
• Wetted components must resist common laboratory disinfectants and alcohols, featuring PTFE seals or equivalent chemically resistant materials.
• Components must withstand autoclaving without performance drift; suppliers must clearly indicate which parts are autoclavable.
• Ergonomic features such as finger-hooks or equivalent supports are mandatory.
• Automatic pipette fillers must operate at standard electrical specifications, include twenty replacement filter sets, and feature autoclavable construction or replaceable sterile filter barriers.
• Upon delivery, each unit undergoes acceptance testing against specified tolerances per test point.
• Suppliers must provide both digital and physical copies of all certificates, along with clear branding, model numbers, and product imagery.
• Technical support requires a maximum ten-working-day response period for any reported operational issues.

Skills Requirements

Bidders must demonstrate proven expertise in supplying precision laboratory instrumentation and a thorough understanding of international metrology standards. Required competencies include familiarity with ISO 8655 calibration protocols, proficiency in interpreting SANAS/ISO 17025 certification frameworks, and the logistical capability to handle sensitive scientific equipment safely. Suppliers should maintain established relationships with accredited calibration providers and possess the technical capacity to troubleshoot pipetting systems. Additionally, bidders must be adept at navigating South African public procurement compliance, including BBBEE verification, Central Supplier Database registration, and completion of standardized municipal bidding forms.

Key Terminology

• SANAS-accredited laboratory to ISO/IEC 17025: SANAS is South Africa’s national accreditation body. ISO/IEC 17025 specifies general requirements for the competence of testing and calibration laboratories, ensuring calibration results are technically valid and internationally recognized.
• ISO 8655: An international standard governing the performance, accuracy, repeatability, and testing procedures for piston-operated micropipettes used for precise liquid handling.
• Z-factor: A correction coefficient applied during pipette calibration to account for environmental variables such as air density and liquid vapor pressure, ensuring measurement accuracy across varying laboratory conditions.
• 80/20 Preference Point System: A South African procurement scoring model where 80 points are allocated to competitive pricing and 20 points to specific socio-economic goals, primarily targeting black-owned small enterprises or qualifying small businesses.