It makes sense to measure the flexibilty rating with the racquet strung as it is obvious we cannot play with a racquet that is unstrung. Anyway flexibility rating of an unstrung racquet is only meaningful to the manufacture and pros.
Recommendations for Iced Tea Safety. * Iced tea sould be brewed at 195 F for 3-5 minutes. * Iced tea should be stored for no longer than 8 hours. * The tea brewer, storage dispenser, and faucet should be cleaned daily. The CDC stated that redesigning tea dispensers to be more easily dismantled and cleaned could further reduce the theoretical risk of bacterial contamination of iced tea. Sun Tea.
No need to email me as additional answers are added to this question. If you keep the tea refrigerated the 3 - 4 days sounds right. I have had iced tea served to me in restaurants that has the off taste of mold. I assume that means it's not kept in the fridge and/or kept too long. I prefer making it with boiling water to steep, but you can put water and tea in the fridge for cold brewing -- that may have an edge on keeping time. This is a cold drink recipe with a tea/syrup base. The syrup will keep a long time (refrigerated).