I would give 5 stars if REACTIVATED silica gel packs lasted as long as BRAND NEW. Unfortunately not, so that means that PRAGMATICALLY I can only use each pack once, especially since REACTIVATED silica packs have to be REACTIVATED again and again after a relatively short period of use. Difference in EFFICIENCY of randomly selected silica gel packs. I randomly tested 4 (out of 14) BRAND NEW silica packs. I used the following test protocol: A. Test bags 1 and 3 were placed in 2 identical sealed containers [(i) and (ii)] in which the relative humidity (RH) was maintained at 100% at an ambient temperature between 60 - 65F .B For many days, I regularly checked the color (BLUE <=> VIOLET <=> PINK) of the silica spheres in each pack. After test packs 1 and 3 went from originally 100% BLUE (BRAND NEW) to 100% ROSE (SATURATED), I REACTIVATED each pack (1 or 3) SEPARATELY in a 1200 watt (MW) microwave oven for the number of minutes ( MIN ) and at the power level % (PL%) given in the data below BEFORE the beads turn from 100% PINK back to 100% BLUE.D. I then repeated A. and B. above with REACTIVATED beads. Test bags 2 and 4 (which served as CONTROLS), also at an ambient temperature of 60 to 65 F, were placed outdoors next to the 2 IDENTICAL sealed containers [(i) and (ii)] mentioned in A. above. . The ambient relative humidity (RH) in the test room was approximately 35-50% RH at 60-65 F. Please note that the test data in the table below shows that Package #1 lasted 13 days (DAY 13-DAY 0). , if the brand is NEW BUT ONLY 3 days (DAY 16-DAY 13) and 5 days (DAY 24-DAY 19) after the REACTIVATION of Pack #1, meaning the REACTIVATED silica packs will not be stored anywhere until then they are BRAND NEW. Note that the following test data also shows that Pack #3 lasted 83 days (DAY 83 - DAY 0) when it was BRAND NEW, BUT ONLY 21 days (DAY 104 - DAY 83) after Pack #3 was REACTIVATED , which again shows that REACTIVATED silica packs never last as long as BRAND NEW. Most importantly, note the HUGE PERFORMANCE DIFFERENCE between Pack #1 (last 13 days if BRAND NEW) and Pack #3 (last 83 days if BRAND NEW), which makes it extremely difficult to estimate how often a pack will be replaced in запечатанном ящике should be. __________________________MWDAY__PACKET#_C OLOR__PL% MINS__NOTES0_____1,2,3,4____BLUE_____-____-____BRAND NEW13____1________PINK______-____-____SATURATED13____1________BLUE_____20__18____REACTIVATED13____2________BLUE_____-____- ____CONTROL16____1________PINK______-____-____SATURATED16____2________BLUE______-___-_____CONTROL19____1________PINK______- ___-_____SATURATED19____1________BLUE_____30__17____REACTIVATED19____2________PURPLE___- ___-_____CONTROL24____1________PINK______-____- ____SATURATED24____2________PURPLE___-____ -_____CONTROL= === ===================================83____3_________ PINK______- ____-____ INTENSIVE83____3________BLUE_____30___8____REACTIVATED83____4________BLUE __ ___- ____ -______ CONTROL104___3_________ PINK______-____-____ SATURATED104___4______50% BLUE___- ____-____ CONTROL
14" Notebook ASUS Vivobook Pro 14 OLED K3400PA-KP112W 2560x1600, Intel Core i5 11300H 3.1 GHz, RAM 8 GB, DDR4, SSD 512 GB, Intel Iris Xe Graphics, Windows 11 Home, 90NB0UY3-M02070, cool silver
20 Review
Eventek Variable DC Power Supply - 32V 10.2A Adjustable Bench Power Supply With High Precision LED Display And Alligator Leads For Switching Regulated Performance
29 Review
50 Pack 3Ml Plastic Transfer Pipettes Eye Dropper Moveland Pipettes Dropper
25 Review
LifeStraw Go Water Filter Bottle: The Ultimate 2-Stage Integrated Filter Straw for Hiking Adventures
10 Review
3Pcs 500Ml CVNDKN Wash Bottles W/ Scale -16 Oz: Plastic Safety Lab Squeeze Bottle
13 Review
ULAB Scientific 1000Ml Borosilicate Glass Beaker With Printed Graduation - Durable And Accurate For Lab Use (UBG1005)
12 Review
Valchoose LDPE Economy Wash Bottle, Narrow Mouth Squeeze Bottle Medical Lab Plastic, Safety Squeeze Bottle No Spill, Bend Mouth Watering Cans (500Ml / 16Oz / 1 Bottle)
14 Review
Get 24 Pack Of 4 Oz. Amber Boston Round Glass Bottles With Droppers From GBO GLASSBOTTLEOUTLET.COM
11 Review