LONDON, UK — U.S. and Canadian bulk diesel exhaust fluid prices (DEF) continued to rise in March, even as feedstock prices declined slightly, according to UK-based Integer Research, a specialist provider of research, data, analysis and consultancy services.

Prices for tote refills in Canada increased an average of three cents in March to $0.64 per liter, while it was up a penny for full truckload and down a penny for less-than-truckload deliveries.

The national DEF truck stop average prices remained at $2.80 per gallon in the U.S. and CA$0.80 per liter in Canada, Integer said.

In the U.S., bulk DEF price increased in March over the previous month up four cents to $1.61 per gallon for full truckload deliveries and $1.93 per gallon for less-than-truckload deliveries. For tote refill deliveries, prices on average increased five cents to $1.99 per gallon.

The DEF Tracker, launched in 2011 by Integer Research, covers 21 regional hubs in the U.S. and three hubs in Canada: Calgary, AB, Montreal, QC and Toronto, ON.