Instruct: Classify a review into positive or negative sentiment.
Query: Exploded in the oven

While baking a basic brownie dish in the oven, my pyrex colbalt blue 9 x 13 pan exploded into 1000 little pieces in the oven. Nothing abnormal was done regarding temperature, greasing or any other questionable baking temperature changes. After reading others' comments I see I am not alone. Do not buy the tinted glass Pyrex, only the clear (never had a problem with clear).