1-K Grade

1-K grade (also known as K-1) is the purest form of kerosene. It’s clear or slightly yellow, with a maximum sulfur content of 0.04 percent by weight. It’s suitable for applications like heaters, burners, and centralized or home heating units. Due to its low sulfur content, it’s possible to burn 1-K kerosene without an exhaust type ventilation unit to remove combustion byproducts from the indoor area.