The collector will accept the sample between 90-100 degrees, but to avoid suspicion 95-98 would be better. After you pour the sample into the cup, check the temperature. If its too hot, lightly blow on the sample until the temperature drops. If the sample is to cold, briskly rub you thumb on your jeans or pants for a couple seconds and then hold it to the temp strip on the cup until it reaches the desired temperature.