Disadvantages of In-Office Whitening. 1  In-office bleaching is more expensive than take-home alternatives. 2  Its cost, on average, is $650, compared to $400 for take-home trays and under $100 for over-the-counter bleaching trays or whitening strips.
Planetary protection is a guiding principle in the design of an interplanetary mission, aiming to prevent biological contamination of both the target celestial body and the Earth in the case of sample-return missions.
The KlixonÂ® 7AM Thermal Protector is. the market leader, backed by proven. innovations in protection technology. The 7AM is a thermally operated sna-. paction device which delivers the max-. imum protection in the smallest pack-. age at an affordable price. The 7AM is a proven performer in pro-. tection technology with over 35 years. of design experience combined with a.