All oil in all of the fryers are changed once a day, usually in the morning (around 8–9) before the lunch rush. You can tell if the oil is clean if your fries look lighter, paler than usual, but it's still fully cooked.
If you're using the fryer on a regular basis, you'll probably need to change the oil at least twice a week. However, if your business uses this machine less frequently, you'll only need to change the oil once every couple of weeks.
With thousands of Shopper Approved ratings and reviews, B&H has consistently maintained a 5-star rating in all seven key categories, including Overall Satisfaction Rating, Product Satisfaction, Delivery Satisfaction, Customer Service and more.
I've heard many students complain that a "B" in grad school is the same as a "C" in undergrad. At most graduate-level institutions, a "B" or higher GPA means the student is in academic good standing.