a a a a a a a a a a a a?

Thank you very much.

04 May 2016 6,484 1 View

a a a a a a a a a a a ?

Thank you very much.

11 December 2015 4,747 1 View

a a a a a a a a a a?

I thank you

10 November 2014 9,663 0 View

Can someone tell me about the origin of sulfates in domestic wastewater and concentration?

07 August 2014 3,976 7 View

a a a a a a a a a a a a a?

I am looking for

05 June 2014 5,111 4 View

a a a a a a a a a a a a a ?

By simple decantation, can

04 May 2014 9,153 5 View

a a a a a a a a a a a a a ?

By any techn

04 May 2014 8,065 11 View

Can someone share chemical reactions involved in the assay for determination of sulphide in waste water by iodometric method?

After acidification of the sample, the sulfides are moved in the form of hydrogen sulfide with an inert gas and collected in a solution of zinc acetate. Iodine used in excess, reacts on the...

04 May 2014 2,882 3 View

a a a a a a a a a a ?

I want to eliminate

04 May 2014 4,144 2 View

How can I determine H2S produced by BSR?

03 April 2014 9,118 7 View

Can any one explain why the ethyl ester Biodiesel (FAEE) has higher than that of the metyl ester FAME- both of them are derived from the same oil?

Biodiesels derived from waste vegetable oil transesterification with Ethanol (FAEE) show higher peroxide values than those derived by transesterification with methanol (FAME) prepared under the...

13 February 2021 193 6 View

Can tannins that are dissolved in water interact with silicone oil?

Hello everyone, Does anybody know if phenolic plant extracts such as tannins dissolved in water can interact with silicone oil? (although silicone oil and water are immiscible).

03 February 2021 5,656 2 View

Where to buy optically clear, low viscosity, refractive index 1.5-1.4 Silicone Oil ?

For research purposes, it is required to have optically clear, low viscosity silicone oil with a refractive index of 1.5-1.4. It is going to be used in optoelectronic research. Online purchase is...

01 February 2021 9,160 3 View

How can I check the chemical composition of an essential oil using HPLC analysis?

Injected an oil having a concentration of 832mg/ml and found a flat top peak and was not able to quantify. How to resolve this problem?

20 January 2021 8,461 3 View

Ideal samples packaging for edible oils?

Hello everyone, I have maybe a stupid question regarding the right packaging to use when comes to send some oil samples in external labs. Do you have any advice about that? Is there a risk that...

18 January 2021 7,826 4 View

Estimating sediment in oil?

What is the thimble in estimating sediment of oils?

03 January 2021 4,379 1 View

Which GC column is used for the analysis of essential oil/perfume samples ?

I have Agilent GC-MS and need to analysis essential oils which column will be applied for their analysis

30 December 2020 4,811 2 View

I would like to know any methods and steps could be use to treat waste containing mixture of alcohol solvent, oils and glycerol?

I'm not sure the steps to treat wastewater containing mixture of alcohol solvent, oils and glycerol. do we neet to separate before further treatment.

27 December 2020 6,058 6 View

Could anybody give me information about room temperature degradation of silicone oil to silicon oxide?

Does anyone have any experience of room temperature degradation of silicone oil to silica in presence of acids?

26 December 2020 1,275 4 View

After extraction of essential oils from medicinal plants or plant parts, what are the possible ways to utilize the leftover?

If we extract the essential oil from a medicinal plant i.e., Ajwain seeds by hydro-distillation technique, it will yield about 2-3% essential oil. My question is about the remaining 97-98% portion...

16 December 2020 5,561 6 View