PART A DEVELOP A LABORATORY EQUIPMENT AND CALIBRATION SOP
Develop a Laboratory Equipment SOP. Calibration standing operating procedures: Ensure the
following sections are included when establishing a calibration SOP:
Purpose: This section describes the purpose of preparing and maintaining the SOP.
Scope: This section describes the broad concepts of equipment calibration, proper record keeping, and
training of personnel.
Responsibilities: This section describes the specific responsibilities of all personnel assigned to the
laboratory.
Procedures: This section describes the procedures to be followed concerning equipment calibration,
identification of equipment that needs calibration, procedures for establishing calibration schedules,
procedures for internal C level and external A level calibration, safety and environmental considerations
to be addressed during operator calibration procedures, record keeping, and personnel training on a
daily, weekly, monthly, etc., basis. Instructions for calibrating equipment are in the applicable TMs.
Record keeping: This section describes the purpose, use, instructions for completion, and disposition of
forms and other record keeping systems that must be followed.
Equipment maintenance: This section lists the equipment and systems that must be calibrated on a
periodic basis.
Miscellaneous: This section contains other specifics such as definitions, when to use/not use specific
forms, symbols, special instructions, and calibration of equipment.
References: This section lists the references used to guide personnel in SOP procedures.
When implementing a calibration SOP, the following steps are included:
Identification of equipment that requires calibration.
Establishment of a calibration schedule for each piece of equipment.
Establishment of procedures for internal C level calibration.
Identification of external agencies for A level calibration.
Identification of safety and environmental considerations to be addressed during operator calibration
procedures.
Implement a Laboratory Equipment Calibration SOP. Calibration requirements can be found in TB
43-180 (Calibration and Repair Requirements for Maintenance of Army Material), applicable ASTM methods,
(Military Standard) MIL-STD-978, and AR 750-25 (Army Test Measurement and Diagnostic Equipment (TMDE)
Calibration).
Personnel requirements. According to AR 750-25, all petroleum laboratory personnel are responsible for
ensuring all of the laboratory equipment listed in TB 43-180 is periodically calibrated.
Calibration logs. Though not required, these have proven valuable in maintaining an equipment audit
trail. They can then be used to schedule the C level calibration workload within the laboratory and A
level calibration by the Test, TMDE personnel.
Calibration of test kits. In addition to petroleum laboratory equipment, components of the test kits may
also require calibration. The sampling and gaging kit contains an innage tape and bob that must be
periodically calibrated. Kits that contain thermohydrometers or thermometers and hydrometers will need
calibration. Personnel responsible for the operation of these kits should contact the nearest mobile or
base petroleum laboratory for C level calibration support. Most of the time, a one for one exchange of
each item of equipment can be arranged. The captured fuels test kit does not require calibration.
"A" level calibration. "A" level calibration is not performed by petroleum laboratory personnel. It is
performed by personnel from a TMDE calibration center. Petroleum laboratories can either schedule a
TMDE calibration laboratory team to perform A level calibration on site or send the equipment to a
TMDE calibration and repair center, or a combination of both. The chosen method depends on the
regulations and policies within the specific command. Laboratories sending equipment for calibration
must have at least two sets of the equipment on hand. Never turn in both sets at the same time. Rotate
them to keep a calibrated set on hand. DA Form 2402 (Exchange Tag) is filled out and attached to each
item of equipment that must be sent to a calibration facility. The sending petroleum laboratory files the
bottom portion of the tag for accountability purposes.
"C" level calibration. "C" level calibration (standardization) is performed at the petroleum laboratory by
laboratory personnel using an "A" level calibrated set of equipment. Once an item of equipment has
passed C level calibration, a completed DA Label 80 (US Army Calibrated Instrument) is either attached
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