1 - Purchase Description 26M-632A-MA Rev2 dated 16 Dec 2025.pdf

26M-632A-MA

16 December 2025

Rev 2

PURCHASE DESCRIPTION

FOR

Pipette Calibration System

1.0 SCOPE: This purchase description specifies a Pipette Balance to be used to perform gravimetric calibrations of pipettes in accordance with ISO8655:2022 with a measurement range of 2 μL to 5 mL at USAF PMELs. This item will replace the Mettler-Toledo XPE26PC.

2.0 PERFORMANCE REQUIREMENTS:

2.1 ISO8655:2022 Compliance: The Pipette Balance shall comply with ISO8655:2022 requirements for piston-operated volumetric devices when the selected volume of the apparatus under test ranges from at least 2 μL to 5 mL.

2.2 Waste Container Volume: 50 mL, minimum.

2.3 Reliability: Item shall maintain its ISO8655:2022 repeatability specification over a period of 12 months, minimum.

2.4 Stabilization Time: The stabilization time for an individual reading shall be no more than 10 seconds.

3.0 FUNCTIONAL REQUIREMENTS:

3.1 Environmental Monitoring: An environmental monitoring station shall be provided that integrates with the Pipette Balance or Software to measure all applicable environmental data in compliance with ISO8655:2022.

3.2 Calibration Requirements: All items required to perform the calibration of the Pipette Balance shall be provided. This includes software and tools.

4.0 MECHANICAL & PHYSICAL REQUIREMENTS:

4.1 Components: Commercial parts and materials that are used shall have properties consistent with a precision laboratory instrument.

4.2 Use of Best Commercial Practices: The equipment shall be designed and constructed of materials that meet the requirements of this specification and in accordance with the best commercial practices for industry approved equipment. It shall be designed and manufactured to maximize reliability, maintainability, accuracy of operation, and ease of operation. All parts (which include, but are not limited to, shafts, bearings, regulators, switches, controls) shall have proper clearance and adjustments. They shall work together so that the equipment will meet the rated requirements without unnecessary strains, vibrations or overheating. They shall be able to withstand the conditions met in shipping, storage, installation and service. All materials and parts of this equipment shall be capable of withstanding the environmental requirements of this specification.

Attachment 1

Rev 2

4.3 Matched and Selected Components: These shall be kept to an absolute minimum. Use of specially built, nonstandard components shall be avoided.

4.4 Model and Serial Number Identification: Item’s Part Number, Manufacturer, and Serial Number shall be identified clearly on the item in a location visible to the operator. Unique item identification shall follow the Item Identification and Valuation clause as stated in the contract.

4.5 Operating Environment/Storage:

4.5.1 Operating Temperature: Electrical, electronic, and electromechanical items shall be capable of operating in an ambient temperature of 67 to 79 degrees F without loss of required performance.

4.5.2 Operating Humidity: The equipment shall maintain specified performance in an atmosphere from 20% to 50% relative humidity without loss of required performance.

4.6 Facility Electrical Power and Connections: The Pipette Balance shall be capable of operating on standard 110 V AC, 60 Hz electrical power.

4.7 Safety: Documentation will be provided to support the means by which electrical safety considerations have been addressed. The safety of all personnel will be ensured in conductive or nonconductive contact with the outside of the equipment, and during the changing of the fuse with the power to the system and its components are turned on. This documentation shall consist of a minimum of a citation of a UL or ANSI identified standard or equivalent United States Standard that the equipment conforms to.

5.0 CONTROLLER REQUIREMENTS:

5.1 If a controller is supplied, it shall meet paragraphs 5.1.1 through 5.1.8 requirements

5.1.1 Controller: A controller shall efficiently operate under Microsoft Windows 10 or 11 Long-Term Servicing Channel (LTSC) 64-bit operating system. All major components of the system shall be commercially available and fully supportable by commercial sources.

Where specific brands are identified in this specification, no substitutes are allowed without prior approval from the AFMETCAL. The Controller shall meet or exceed Microsoft Windows 10 or 11 LTSC hardware requirements.

5.1.2 Memory: Minimum 8 GB system Memory

5.1.3 USB: Minimum of one integrated USB 3.0 ports not being utilized by other components

5.1.4 External video support

5.1.5 Display Panel: 15-inch (diagonal) or larger viewable display

5.1.6 Hard Drive: Minimum 120 GB Solid State Drive

5.1.7 DVD-ROM: Internal or External DVD +/- RW or Blue-Ray

Rev 2

5.1.8 Operating System and Software: All software must run under Microsoft Windows 10 or 11 LTSC 64-bit operating system. All software shall run Windows 10 or 11 as a non-elevated user. All software must run with multiple Windows 10 or 11 user accounts. Shall be supplied with Microsoft Word and Excel, latest release with a non-renewable license.

5.1.9 Lenovo brand controller will not be acceptable.

5.2 Additional Hardware: Additional hardware required to make this system function as identified by this purchase description shall be required.

6.0 SOFTWARE/FIRMWARE REQUIREMENTS:

6.1 General Compliance: The software shall be designed and validated to ensure compliance with ISO 8655:2022. All calculations, data handling, and reporting features shall adhere to the specifications outlined in this standard.

6.2 Instrument Management:

6.2.1 Pipette Identification: The software shall allow for the unique identification of each pipette, including manufacturer, model, serial number, volume range, and user-defined parameters.

6.2.2 Pipette Definition: The software shall allow the user to define pipette-specific parameters, such as nominal volume, allowable error limits (based on ISO 8655:2022 or user-defined criteria), and calibration frequency.

6.2.3 Pipette Tracking: The software shall track the calibration history of each pipette, including previous calibration dates, calibration results, and any maintenance or repairs performed.

6.3 Pipette Calibration Process:

6.3.1 Balance Integration: The software shall integrate with the Pipette Balance to automatically capture weight measurements.

6.3.2 Environmental Data Input: The software shall integrate with the environmental monitoring system to allow for automatic input of environmental conditions, including temperature, pressure, and humidity. The software shall apply appropriate corrections to the measured data based on these environmental parameters as specified in ISO 8655:2022.

6.3.3 Measurement Data Entry: The software shall provide an interface for entering measurement data, including weight readings, number of repetitions, and any other relevant information.

6.3.4 Calculations: The software shall automatically calculate the following parameters according to ISO 8655:2022:

6.3.4.1 Mean volume dispensed

Rev 2

6.3.4.2 Systematic error (bias): Absolute and Relative

6.3.4.3 Random error (repeatability): Absolute and Relative

6.3.4.5 Uncertainty of measurement: Absolute and Relative

6.3.5. Calibration Methods: The software shall support gravimetric calibration methods as described in ISO 8655:2022. It should allow the user to select different test volumes (e.g., 10%, 50%, 100% of nominal volume).

6.4 Acceptance Criteria and Reporting:

6.4.1 Acceptance Limits: The software shall allow the user to define acceptance limits for systematic error, and random error based on ISO 8655:2022 or user-defined criteria.

6.4.2 Pass/Fail Indication: The software shall automatically determine whether a pipette passes or fails calibration based on the defined acceptance limits.

6.4.3 Calibration Certificates: The software shall generate calibration certificates that include all relevant information, such as instrument identification, calibration date, operator identification, environmental conditions, measurement data, calculations, acceptance criteria, calibration results, and a statement of conformity to ISO 8655:2022.

6.4.4 Customizable Reports: The software shall allow for the customization of reports, including the selection of data to be displayed and the layout of the report.

6.4.5 Data Export: The software shall allow for the export of calibration data in various formats, such as CSV, Excel, or PDF.

6.5 Software/Firmware Identification: All software/firmware used in conjunction with instrument shall be identified by Name, Version, and Date; to be displayed upon startup or located in an “About” menu in the software/firmware.

6.6 Interchangeability:

6.6.1 When software/firmware upgrade is anticipated by a manufacturer during the life of this contract, the contractor shall contact AFMETCAL for concurrence. If AFMETCAL concurs with the proposed upgrade, all previous units delivered under this contract shall be updated to this upgrade.

6.6.2 All software/firmware provided under this contract shall be at the same version, revision, and revision date at the completion of the contract.

6.6.3 Software/firmware shall be updateable by AFMETCAL through communication protocols with Windows based-PC or external drive. Instructions on how to perform the update and any required communication software shall be provided.

6.7 Software License: Perpetual license required.

Rev 2

7.0 WARRANTY & TECHNICAL SUPPORT:

7.1 The contractor shall warrant that the Pipette Balance and accompanying Calibration Software is free from defects in design and operation, and will perform to stated specifications within this purchase description for a period of at least three (3) years from the date of acceptance.

7.2 The contractor (at no additional cost) shall repair, update, or replace the product as necessary to correct any deficiencies identified. Replacement components shall meet or exceed the requirements in this purchase description, shall not require additional training to operate, and shall be warranted for the remainder of the equipment warranty.

7.3 The contractor shall bear transportation costs for all replacement products.

7.4 The contractor (at no additional cost) shall provide technical support for normal usage, clarification of documentation, and resolution of problems. The contractor shall have multiple methods for convenient contact of Technical Support. Contact methods may include but are not limited to on-line or telephone.

8.0 OPERATOR AND SOFTWARE MANUALS:

8.1 Operator Manual Requirements

8.1.1 Description of hardware components, technical specifications, environmental requirements, and accessories included.

8.1.2 Installation and setup instructions

8.1.3 Operating instructions

8.1.4 Maintenance and cleaning requirements

8.1.5 Calibration instructions

8.2 Software Manual Requirements

8.2.1 Installation and setup instructions

8.2.2 User interface overview

8.2.3 Operating instructions

8.2.4 Data management instructions

8.2.5 Reporting instructions

8.2.6 Configuration and settings

9.0 INSTALLATION REQUIREMENTS: The contractor shall be responsible for installing the system on-site to ensure the system is fully functional and meets the requirements of this purchase description.

Rev 2

10.0 TRAINING REQUIREMENTS: Training shall be provided for up to four people not to exceed two days. Training will consist of operation and use of the system, including all software functions.

11.0 ENVIRONMENT, SAFETY, AND OPERATIONAL HEALTH: A combination of the system manual, other documentation, and/or the system itself shall identify potential environment, safety and operational health hazards and how they are mitigated when the design itself cannot mitigate them. This will be accomplished through stating the hazard and accompanying mitigation through the use of safety devices, use of warnings, or use of special operational procedures to counter such hazards.

12.0 TESTING REQUIREMENTS: This item will be inspected and accepted at destination as stated in the contract. The item will be checked with test equipment with parameters equal to or better than those required to assure that specified performance parameters are met. Test equipment has first echelon certification directly traceable to the International System of Units through the National Institute of Standards and Technology (NIST) or other AFMETCAL approved sources where required. Tests will be performed to ensure that the item meets the requirements of this purchase description. Such testing at destination does not relieve the contractor of performing all inspections and quality checks at the point of manufacture as necessary to assure performance as specified herein.

Attachment to Purchase Description

26M-632A-MA

Pipette Calibration System

DATA REQUIREMENTS

MANUALS: A complete user and service manual and calibration procedure shall be provided with each unit in contractor format. Manuals shall be on CD/DVD-ROM in Indexed Portable Document Format (iPDF). The manuals shall comply with Data Item Description (DID) DI-TMSS-80527D and the Contract Data Requirements List (DD Form 1423).

Commercial Engineering Design Data and Associated Lists: The following shall be provided: a 2-dimensional (2D) engineering drawing in accordance with MIL-STD-31000B paragraph 5.4.1.4. A geometric representation defining the physical shape of the product. The PDF document shall contain:

Nomenclature, Document/Drawing Number, Part Number, Contract Number, Design Activity Identification (e.g. CAGE Code(s)), Approved By, Approved Date, Revision Level Identification, Revision Date, and if applicable Export Control/ITAR Statements, Distribution Statements, Destruction Notices, and/or Classification Requirements.