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Accuracy can be compared to a gravimetric standard? Are NIST standards available?

Several highly accurate standard reference materials (SRMs) are now available from NIST ...

ASTM updates test methods every five years. Will EPA issue a ruling that will allow the latest (most up to date) version?

The nonroad diesel rule contains a performance-based provision specifically for diesel sulfur that allows ...

Can an approved highway diesel small refiner stay in business just by producing only 500 ppm diesel fuel and supply to the off road market.

An approved highway diesel small refiner that currently produces highway diesel can produce ...