The Wisconsin-based processor of bagged spinach that tested positive for salmonella has resumed packing.

On May 4, the Wisconsin Department of Agriculture, Trade and Consumer Protection told Milwaukee-based Kleen-Pak Foods that tests of the company's spinach processing equipment found no traces of salmonella, said Jerry Kowaleski, Kleen-Pak's vice president.

Earlier tests of spinach in the company's coolers also found no salmonella.

Kleen-Pak began repacking spinach "in a small way" May 5, and Kowaleski said he was pleased with the number of customers who placed orders.

"I was a little surprised," he said. "It wasn't like a 50% (dropoff in orders). Some came back right away, others are just kind of waiting until the dust settles."

As of May 6, none of Kleen-Pak's customers had told the company they were switching to another bagged spinach supplier, Kowaleski said.

Kowaleski said it was hard to tell when Kleen-Pak would return to normal production levels.

On April 29, the company announced a recall of about 8,000 retail packs and 1,200 pounds of wholesale and foodservice curly leaf spinach, following a routine test by the Wisconsin agriculture department that turned up a positive sample for salmonella.

No illnesses traced to the contamination have been reported.

The spinach was shipped to Kleen-Pak by Pinto Creek Co. LLC, Queen Creek, Ariz.

The recalled product is Kleen-Pak-branded 10-ounce and 1-pound packages of curly leaf spinach and has a use-by date of April 29, April 30 or May 1. It was distributed in Wisconsin, Minnesota and the Chicago area.