Complex sentence: On October 27,2016, the company halted sales of Soylent Powder 1.6, while saying its own tests on the bar came back negative for contamination some powder users reported similar stomach-related symptoms from consuming the powder.
Split into simpler sentences: On October 27,2016, the company also halted sales of Soylent Powder. The company said tests on the bar had come back negative for contamination, but also said that some powder users had reported similar stomach-related symptoms from consuming the powder.