Chemicals
- Bicarbonate Indicator QuestionWhat colour should this be? AnswerThe colour is normally red but change...
- Gram Stain Kit QuestionI'm looking to replace the phenol fuchsin component from my Gram Stain Ki...
- Gram Stain Kit QuestionWhat does phenol fuchsin consist of? Answer Phenol fuchsin contains: fu...
- Thiele m.pt. apparatus QuestionWhich type of oil should I use with the Thiele apparatus? AnswerCLEAPSS...
- Agar (Agar-agar / Gum agar) QuestionHow to make into solution? AnswerMix 1.5 g of agar with 10 ml of water ...
- Benedict's Solution, Qualitative QuestionWhat does this test for and what are the colour changes AnswerUsed to t...
- Buffer tablets pH7 QuestionHow much solution does 1 buffer tablet make? AnswerEach tablet makes 10...
- Buffer tablets pH7 QuestionWhat are the buffering species of these buffer tablets? AnswerThese are...
- Buffer tablets pH4 QuestionWhat are the buffering species of these buffer tablets? AnswerThese are...
- Buffer tablets pH9.2 QuestionWhat are the buffering species of these buffer tablets? AnswerThese are...
- EDTA disodium salt QuestionCan I dissolve this in water at pH7? Answer The disodium salt of EDTA w...
- Fehling's Solution QuestionWhat does this test for and what are the colour changes? AnswerUsed as ...
- Hydrogen Peroxide, 20 Vol. Question What is this concentration used for? AnswerThis concentration is used ...
- Hydrogen Peroxide, 20 Vol. Question What is the concentration of this solution? AnswerThis solution is app...
- Hydrogen Peroxide, 20 vols Question What is the shelf life for this product? AnswerShelf-life 6 months max...
- Iodine 1% solution in KI QuestionIs this suitable for starch testing? AnswerThis is suitable for starch ...
- Iron (ll) sulphate 7-water QuestionWhen I dissolve this in water the solution turns brown or cloudy. What ca...
- IRON (II) SULPHIDE LUMP QuestionWhat form is this supplied in? AnswerThis is supplied as 'rods' of abou...
- IRON (III) SULPHATE HYDRATE QuestionIron(lll) sulphate (Ferric chloride) - what is the molecular weight and h...
- Stearic acid Question Are there any alternatives to Stearic acid for the cooling curve experim...
- SODIUM CARBONATE 10-WATER QuestionWhen I try to dissolve this a sediment forms and the solution does not cl...
- Starch, soluble QuestionWhat is the source of the soluble starch? AnswerOur supplier informs us...
- Zinc granules QuestionWhat size are the Zinc granules? AnswerThe Zinc 'granules' are quite la...
- GIBBERELLIC ACID QuestionHow do I make Gibberellic Acid into solution? Answer To prepare a 100 p...
- ADENOSINE-5-TRIPHOSPHORIC ACID (ATP) QuestionHow do I make ATP into solution? Answer To make into solution - use dis...
- Benedict's Solution, Quantitative QuestionWhat does this test for and what are the colour changes? AnswerUsed to ...
- Buffer Solution QuestionShould the buffer solutions be used straight from the bottle or can they ...
- Chlorine Water QuestionWhat is the concentration of chlorine water? Answer It is approx. 0.6% ...
- Chlorine Water QuestionHow do I work out the molarity of chlorine water? AnswerChlorine water ...
- SODIUM BOROHYDRIDE QuestionThis has been supplied to us in tablet form, rather than powder; is this ...
- MANGANESE OXIDE GRANULAR QuestionWhat is the size of the grains in this? AnswerThe granules are between ...
- Latex QuestionDoes this Latex solidify to make rubber when mixed with acetic acid? An...
- Crude oil substitute QuestionHow many fractions can be expected from the mixture? Answer There shoul...
- Crude oil substitute QuestionWhat are the components of this mixture? AnswerThe Crude Oil (substitut...
- 2-METHYL PROPAN-2-OL QuestionArrived solid, is this correct? AnswerYes this can arrive in a solid st...
- Sudan lll alcoholic QuestionIs this type suitable for a simple food test for lipids or should I buy t...
- Methylated Spirit QuestionWhat are the constituents of your meths (IDA)? AnswerOur meths consists...
- Ethanol QuestionThis is stated to be 99.9% pure, what is the other 0.1% AnswerThe unkno...
- Ninhydrin spray QuestionWhat is the ninhydrin dissolved in? Is it Butan-1-ol? AnswerYes, the Ni...
- POTASSIUM NITRATE QuestionWhen trying to dissolve the crystals, the solution remains cloudy. Why is...
- Soda lime, self-indicating QuestionWhat is the colour change of this? AnswerThe soda lime changes from whi...
- Sodium hydroxide QuestionSodium hydroxide, pellets & pearl - what is the difference? Answer...
- SODIUM HYDROXIDE 40% SOLUTION QuestionWhat is the molarity of this solution? Answer Sodium hydroxide has a mo...
- Hydrochloric acid, 36% (conc.) QuestionWhy is my Hydrochloric acid yellowish in colour and is it still alright t...
- DL-Lactic acid QuestionWhat is the concentration (assay) of this? The SDS states 90-100% but the...
- Ammonia solution 33-35% (conc.) QuestionWhat is the molarity of this concentrated amonia solution? Answer This ...
- Hydrochloric acid, 36% (conc.) QuestionWhat is the molarity of the concentrated solution? AnswerDensity = 1.18...
- Sulphuric acid 98% (conc.) QuestionWhat is the molarity of the concentrated solution? AnswerDensity = 1.84...
- Orthophosphoric acid 85% (conc.) QuestionWhat is the molarity of the concentrated solution? AnswerDensity = 1.70...
- Formic acid 90% (conc.) QuestionWhat is the molarity of the concentrated solution? AnswerDensity = 1.22...
- Propanoic (Propionic) acid 99% (conc.) QuestionWhat is the molarity of the concentrated solution? AnswerDensity = 0.99...
- DL-Lactic acid 88% (conc.) QuestionWhat is the molarity of the concentrated solution? AnswerDensity = 1.20...
- Iodine solution QuestionWhich Iodine solution can be used for halogen reaction (displacement) exp...
- DCPIP tablets (2,6-Dichlorophenolindophenol) QuestionHow much solution does 1 tablet of DCPIP make? AnswerEach tablet is 100...
- Sulphuric acid, conc. QuestionWith the recent changes in government legislation for Sulphuric acid, wil...
- Potassium hydroxide QuestionWhat is the difference between the flakes and the pellets? AnswerThese ...
- Calcium chloride QuestionI came to use my Calcium chloride, which has been stored on the shelf uno...
- Buffer Solutions QuestionWhat is the shelf-life of the ready-made buffer solutions? AnswerThe sh...
- CHARCOAL WOOD LUMP QuestionWhat does this look like? AnswerThis looks like BBQ charcoal and comes ...
- Iodine 1% in KI QuestionWhat is the molarity of Iodine in this solution and how much KI is presen...
- RESAZURIN TABLETS QuestionHow do you make these up into solution and what will the concentration be...
- Buffer Solutions QuestionDo these contain EDTA? AnswerNo, our supplier has confirmed that these ...
- STARCH SOLUBLE QuestionWhen I add water to the powder, the solution is cloudy and not clear as e...
- PROPANAL QuestionMy Propanal is decolourizing Bromine water - is it contaminated? Answer...
- Magnesium carbonate QuestionWhat is the difference between heavy and light? AnswerDifference in den...
- PHENOLPHTHALEIN 1% SOLUTION QuestionShould the Phenolphthalein solution be used neat, straight from the bottl...
- Chromatography Markers (Amino Acids) QuestionWhat solution are these made up in? Answer DL Aspartic Acid (CHR-150-10...
- PARAFFIN LIQUID LIGHT QuestionIs this suitable to use for storing sodium, lithium and potassium? Answ...
- ALUMINIUM POWDER QuestionWhat is the particle size of the Aluminium powder? AnswerOur supplier s...
- AMMONIUM IRON (III) CITRATE, green QuestionMy Ammonium iron (lll) citrate should be green but it now looks brown - i...
- UNIVERSAL INDICATOR PH 4-11 QuestionWhat is the solvent in this? AnswerThe solvent is meths (IDA/IMS) - app...
- UNIVERSAL FULL RANGE IND PH 1-14 QuestionWhat is the solvent in this? AnswerThe solvent is meths (IDA/IMS) - app...
- BIURET REAGENT - WORKING SOLUTION QuestionWhat is the concentration of Sodium hydroxide in the Biuret Reagent? An...
- Sulphuric acid 96-98% QuestionMy Sulphuric acid has gone cloudy; is it alright and can I still use it? ...
- LIMEWATER (CALCIUM HYDROXIDE SOLUTION) QuestionWhat is the concentration of the Calcium hydroxide solution in limewater?...
- Toluidine blue QuestionWhat is Toluidine Blue used for and how do you make it up into solution f...
- Methyl orange (powder) QuestionHow do I make methyl orange powder up into solution? AnswerTo make Meth...
- Methyl orange-Xylene Cyanol (screened methyl orange) - powder QuestionHow do I make methyl orange-Xylene Cyanol powder up into solution? Answ...
- SODIUM CHLORIDE - GRANULAR QuestionThe 5kg tub of Sodium chloride is not granules but large pieces. Answer...