STORAGE LIFESPAN


  Water absorbing performance of AQUA-BOY
remains the same after 12 years 		 
 
Water absorbing performance of AQUA-BOY due to enfrared rays and temperature of 135℃ or higher. At the request of a sustomer, we performed absorption testing of AQUA-BOY which had been stored in a carton box for 10-14 years. The results are shown below. AQUA-BOY has an extremely long lifespan. Testing has proved that AQUA-BOY will still performe even when atored for long years. The value of AQUA-BOY dosen't change even when stockpiling large number of the product.
 
  Water absorption performance curve for LL-1 produced in 2002
(Using 18℃ city water) 		 
○ materialーⅠ（produced in 2004）
△ materialーⅡ（produced in 2004）
● materialーⅢ（design value）
▲ materialーⅳ（tested in 2014Dec）
Data sample Aug.13,2010
Testing site:Meico Labo		 Data sample: Aug 13.2010
Testing site: Meico Labo
time left in water
   


Observations： ○： MaterialーⅠwas already stained brown before testing. Furthermore, when compared to Material-Ⅱ the water absorption characteristic curve falls noticeablity. Therefore, it is likely that the product was taken out of its packaging during the 10-year period.
△： MaterialーⅡhas an initial water absorption speed slower than the design value. However, the water absorption scale factor sufficiently astisfied the initial performance.
▲： We were very much surprised to know that the perfoumance of AQUA-BOY dosen't change even past 12 years after production.This would be very big advantage as a security products to be storaged.