MIL-PRF-5606H
departmental medical service who will act as an advisor to the procuring activity (see
3.6 Workmanship
The workmanship shall be in accordance with high-grade, commercial practices covering
this type of material. The finished fluid shall be homogeneous and free from suspended
matter, grit, or other adulteration.
4.
VERIFICATIONS
4.1 Classification of inspections
The examination and testing of the hydraulic fluid shall be classified as follows:
a. Qualification inspection (see 4.2)
b. Conformance inspection (see 4.3)
4.2
Qualification inspection
4.2.1 Qualification sample
Qualification samples shall consist of a 1-gallon container of hydraulic fluid. The
following may also be requested at the option of the qualifying activity: 1 quart
petroleum-base stock before the addition of additive agents, 1 gram red dye, 4 ounces of
the additive used to improve the viscosity-temperature coefficient, 4 ounces anti-wear
agent, 2 ounces pour depressant (if used), 1 ounce of the compound used to improve
the oxidation stability, and 1 ounce of any other additive used in the formulation. In the
event additives are supplied as concentrated solutions, an equivalent quantity of the
solution shall be furnished. The qualifying activity will request data as noted in 6.2.3 to
accompany the qualification samples.
4.2.2 Qualification tests
Qualification sample(s) shall be subject to all the tests specified within section 4.4,
methods of inspection.
4.2.3 Retention of qualification
In order to retain qualification of a product approved for listing on the QPL, the
manufacturer shall verify, by certification to the qualifying activity, that the manufacturer's
product complies with the requirements of this specification. The time of periodic
verification by certification shall be in two-year intervals from the date of original
qualification. The Government reserves the right to re-examine the qualified product
whenever deemed necessary to determine the product continues to meet any or all of
the specification requirements.
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