Sands

by **audioactive08** » Thu Sep 08, 2005 6:48 pm

mga sir, meron ba dito nung black volcanic sand? ganda ng kulay sa aquarium, contrasting sa colors ng mga corals.

by **Fugu** » Fri Sep 09, 2005 3:53 am

by **wax_static** » Fri Sep 09, 2005 10:06 am

by **audioactive08** » Tue Sep 13, 2005 7:59 pm

by **wax_static** » Wed Sep 14, 2005 8:42 am

how do I test for silicates?

by **audioactive08** » Mon Sep 19, 2005 4:21 pm

by **audioactive08** » Mon Sep 19, 2005 4:31 pm

quote ko lang po regarding sa testing for silica and silicates. sa ask a chemist nanggaling to eh..

"The test rock hounds use for identifying silica and silicates is one I will mention because it appears in the print and Internet literature; however, I do not recommend it unless adequate safety precautions are taken. It is based upon the reaction of silicates with hydrofluoric acid. There is an effervescence (bubula), after carbonate minerals have been
excluded by a test using hydrochloric acid. :!:

The issue is safety :!:

. Neither silicon tetrafluoride, nor hydrofluoric acid are substances to be handled without rather careful safety precautions. Obviously you cannot even use "standard" glassware to
carry out the test because the glass will evolve the same toxic nasty reaction products. SiF4 reacts with water vapor to produce more HF and HF is just one of
those substances you do not want to "mess with" unless you really know what you
are doing.

by **wax_static** » Mon Sep 19, 2005 5:15 pm

di na lang ako mag tetest.. vinegar test na lang for argonite sand.. delikado..

by **audioactive08** » Tue Sep 20, 2005 3:03 pm

by **wax_static** » Tue Sep 20, 2005 3:18 pm

by **jolt26** » Tue Sep 20, 2005 3:32 pm

by **chonglai** » Tue Sep 20, 2005 3:42 pm

eto ung list ng pwede ninyong gamitin na sizes na sand.

by **audioactive08** » Thu Sep 22, 2005 5:12 pm

by **Fugu** » Thu Sep 22, 2005 7:18 pm

by **jackryan** » Thu Jan 19, 2006 3:43 pm

Sands

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