 |
| | How do I dilute iodine solution to get 0.01M? |
| | Answer: 400ml of iodine solution made up to 1 litre with purified water. |
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| | What is the amylase content of
Prime-chemicals amylase? |
| | Answer: Approximately 12%. Less than 0.5% active protein. |
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| | Are both Prime-chemicals amylase the same strength? |
| | Answer: Yes. |
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| | Do both amylase contain sugars? |
| | Answer: Not as an added ingredient but after fermentation process, maybe a small reduced carbo-hydrate. |
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| | What are the dimensions of a large van de graaf generator? |
| | Answer: Overall height 64cms. Head diameter 28cms. |
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| | What is the size of the spare belts for van de graaff generators? |
| | Answer: Large generator 5.6cms x 48cms
Small generator 5.2cms x 40cms |
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| | If frozen rattus rattus has thawed during delivery can it be re-frozen? |
| | Answer: Yes |
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| | What amino acids are contained in the amino acid set? |
| | Answer: 1g each of the following -
L-Alanine, L-Arginine, L-Asparagine, L-Cystine, L-Glutamic acid, Glycine, L-Histidine monohydrochloride, L-Leucine, L-Lysine monohydrochloride, DL-Methionine, DL-Phenylalanine, L-Proline, L-Serine, L-Threonine, L-Trypyophane, L-Tyrosine, L-Valine |
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| | What are the regulations for using alcohol? |
| | Answer: We do not believe there are any regulations governing the use of alcohol, but there are when it comes to purchasing. i.e duty rates etc. |
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| | How do I dilute sodium hydroxide 40% w/v to 5M? |
| | Answer: 5M is equivalent to 20%. Make up the required strength by using 1/2 & 1/2 deionised water and sodium hydroxide. |
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| | What is in Artificial Crude Oil? |
| | Answer: Paraffin liquid, Kerosene white, white spirit, petroleum spirit (60/80,80/100,100/120°c) & ivory black oil based paint |
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| | What is a Nessler cylinder? ? |
| | Answer: Manufactured from tubing specially selected for its freedom from colour and visible defects. Cylinder bases are formed by a technique which gives maximum clarity. Supplied in matched pairs. Manufactured from soda-lime glass.
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| | What effect will a faraday coil have? ? |
| | Answer: When light is shone up the polarimeter, you can move filters so the light is blocked. When you switch on the coil, the beam of light will bend so the light can be seen. This is the faraday effect. |
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| | What is the difference between borosilicate glass and neutral borosilicate glass? |
| | Answer: Neutral borosilicate glass is more alkali resistant than standard borosilicate glass. |
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| | What is the difference between non/single/triple vented petri dishes? |
| | Answer: On the lid of vented petri dishes a raised area is moulded in. For single you will find 1 area and triple 3. On non vented petri dishes the lid sits flush. There is no actual vent hole in any petri dish lid as is so often thought. |
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| | What is Hydrogen Carbonate Indicator? |
| | Answer: We list this product as Bicarbonate Indicator Stock Solution.
Product code CB3400-16 for 500ml. |
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| | Can i buy Chlorine water? |
| | Answer: This product is currently not available through Beecroft.
However, this product is made by saturating water with 0.4% chlorine. |
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| | What is contained in albumen powder? |
| | Answer: Approximately 80% protein. The remainder is made up of water. |
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| | our amaylase does not seem to be working as it should are we using the right one? |
| | Answer: In order for us to solve this query, we require a few more details. Please contact our sales office and we will be more than happy to help. |
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| | What is the molarity of your Iodine solution with 1% KI, product code CI3400-16? |
| | Answer: This product is not intended to be used as a volumetric solution. However this product is approximately 0.04M. |
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| | Could you please send me a copy of your periodic table as sent out some time ago. Many thanks,
Lesley Pickering? |
| | Answer: Please contact Sarah in our sales office at your earliest convenience. |
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| | Do you sell hazard tape e.g corrosive ,toxic etc? |
| | Answer: Yes. These can be found under the safety heading. We will also add these under the simple heading of tape immediately to make the easier to find. |
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| | What is the difference between paraffin and kerosene? |
| | Answer: Paraffin Oil (commonly called just Paraffin or Paraffin liquid) and Kerosene are one and the same substance. Parrafin Oil is the UK name and Kerosene is the US name. |
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| | How long is the certification valid for on a certified test sieve (to BS410)? |
| | Answer: I realise this does not completely answer your question, but following is the reply from our supplier
"If the sieve is used everyday then they recommend that the sieve be
re-inspected for roundness, mesh condition etc every 3 - 6 months.
If the usage is once a week, then they suggest it be re-inspected every
6 - 12 months. This is a guideline only as it really is up to the
customer to decide when this needs to be done" |
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| | Potassim Dichromate how safe is it to use? |
| | Answer: Please refer to Material Safety Data Sheet for Potassium Dichromate here http://www.proscitech.com.au/catalogue/msds/c155.pdf (needs acrobat reader).
How safe the substance is will depend on what you are using it for and what conditions it is being used in. |
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| | How much amylase 3.2.1.1 to how much water? |
| | Answer: I'm afraid this is out of the scope of our knowledge. Since alpha amylase is used in varying ways, what it is mixed with is very changeable. I would advise contacting a food laboratory or similar department at a University to discuss this. |
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| | How can i go about getting an update catologue of all your products? |
| | Answer: Our present catalogue is still the 2003/2004 edition. A new 2008/2009 catalogue will be released in March 2008. Until then if you need a current price on one of our products you can either ring in or check the website. |
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| | What is the best formula for making nutrient agar plates from Agar powder? |
| | Answer: A simple formula can be found here: http://www.sciencestuff.com/playground/agar_powder.shtml |
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| | are chemical safety data sheets available to buy or download from your site? |
| | Answer: they are not available to download but if you contact the sales office they will be able to provide the information required. |
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| | Do you still sell Clinistix and Albustix for glucose and protein testing? |
| | Answer: Yes. However these products are not listed on our website. Please contact sales on 01709 377881 to order. |
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| | Is the product "Paraffin liquid, light L.R." entirely free of water content and can therefore be used to immerse Alkali metals such as Sodium metal for safe storage in the laboratory? |
| | Answer: Our supplier informs us that this product contains no water. |
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| | I have made up some Phenol red to 0.02% as sold in solution. I have not been able to find any instructions and it seams quite 'orange' as opposed to the old stock which is definately red. Could you please advise how to make it up as this may be the problem. Thankyou ? |
| | Answer: To make 1L of solution
Dissolve 0.2gms of Phenol red in 200ml of Propan-2-ol or I.M.S
Make up to 1L with deionised water
Add 0.1M Sodium hydroxide dropwise until red colour is obtained. (this step can be omitted but it looks an anemic orange but still works ok) |
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| | How do i make up Phenol Red? Is it usually made up to a 0.02M solution? |
| | Answer: To make 1 litre of solution dissolve 0.2gms of Phenol red in 200ml of Propan-2-OL or IMS. Make up with 1 litre deionised water. Add 0.1M Sodium hydroxide dropwise until red colour is obtained(this step can be omitted but it looks an anemic orange but still works) |
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| | How is the purified water you sell purified? Has it been distilled or just filtered?
? |
| | Answer: It is filtered |
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| | If I want 2 litres of 50g/Lt Cr(VI)O3 aqueous solution, do I just add 100g of CrO3 crystals to 2 litres of distilled water? |
| | Answer: To be technically correct you should dissolve the 100g in about 1500ml of purified water and then make up to 2l once dissolved.you then have a solution containing 50g/l.
If you take 100g and dissolve it in 2l of purified water you will end up wit a final volume of about 2075ml which gives a solution of about 48.2gm/l.
Hope this has help you,please let us know if it hasn't. |
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| | Where do I find the Risk and Safety phrases on your web site? |
| | Answer: They are listed on each chemical, when you have clicked on your chosen chemical code click on code meanings and all the information will appear. |
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| | Where do I find the Risk and Safety phrases on your web site? |
| | Answer: Click "Browse Products", choose a chemical beginning letter and then pick any chemical. Finally click "Code Meanings"
Alternatively here is a direct link http://www.beecroft-science.co.uk/home/chemicalinformation/default.aspx |
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| | Why are some of the prices listed on your website different from those in the catalogue you send out? |
| | Answer: the website is currently undergoing maintenance to update the prices to match the 2010/2011 catalogue. please do not hesiate to contact the sales office if you wish to discuss this further. apologies for any inconvenience caused and we hope to have this sorted asap. |
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| | What equipment do I need (and do you sell it?) to extract essential oils from lavendar/ roses etc? |
| | Answer: to find out what equipment you would need please refer to website address www.essential-oil-recipes.com/essential-oil-extraction.html - once you have found out the exact equipment that you need , please contact us for availability |
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| | How often do I need to subculture the Microccus Luteus culture? |
| | Answer: Every 4-6 weeks |
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| | I have purchased dilute lactic acid (>85%) and need to use the equivalent of 50g weight for my solution. What is this in ml and how is this converted? |
| | Answer: YOU NEED TO USE 58.8ML
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| | Are we allowed to use peanuts at school as experiments? |
| | Answer: We are not authorised to advise - please contact Cleapps for further information. |
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| | what is the amount of traning used for a clinistix ?? |
| | Answer: MORE INFORMATION IS NEEDED PLEASE. |
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| | Could you tell me what volume of propionic acid do i need to use to make a 1M solution please.Your product is 99%w/w ? |
| | Answer: WE ARE STILL AWAITING DETAILS FROM OUR SUPPLIER AND HAVE NOT YET HAD ANY COMEBACK. COULD YOU PLEASE EMAIL MORE DETAILS. THANK YOU |
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| | Diastase from malt: what is the best strength to make it up and should it be in dH2O or buffer? If buffered, to what pH? I want to use it against 1% soluble starch and need it to be reacting in about 10 minutes. What is its preferred temperature for this reaction? And should it be stored at 4'C or room temperature? |
| | Answer: enquiry has been put on at our suppliers but they still cant get the
information for me as yet. our apologies |
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| | How can I make a 0.04M solution of Chlorine ? |
| | Answer: our supplier does not think it very
stable for chlorine.hope this helps. |
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| | Is there a list available of chemicals which incur a hazardous delivery charge, please? |
| | Answer: There are no charges at the moment.
thank you |
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| | how long before pupa hatch to flies? |
| | Answer: . |
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| | chemical safety data sheet
? |
| | Answer: which chemical do you need a safety data sheet for. Please advise your fax
no also and I can fax the information
to you. Thank you. |
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| | how can i obtain an msds sheet for butanone? |
| | Answer: If you go on our website and find the code for butone, i think it is code
cb7104-16, you can then click on msds sheet and it brings the information up for you. This can then be printed.Any further queries please contact us. Thank you. |
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|
| | which water do i need for soil p.H test kits.
i can not find deionized water on your website only 'purified' water? |
| | Answer: ordering code; BUWA008 demineralised
water.hope this is ok.
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| | Do you sell distilled water for testing pH of soil ? I can not find it listed on your website?
? |
| | Answer: BUWA008 code Demineralised water |
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|
| | what the difference between single vent and triple vent petri dishes
? |
| | Answer: THE SINGLE VENT PETRIA DISHES HAVE 1 VENT ONLY, THE TRIPLE VENT HAVE 3 VENTS, BUT THE VENTS CAN BE CLOSED IF
YOU DO NOT WANT VENTS ON THE PETRIA DISHES. HOPE THIS INFORMATION IS OK. THANK YOU. |
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|
| | what are single and triple vented petri dishes used for and can non-vented petri dishes be used instead or vice-versa? |
| | Answer: THE SINGLE VENT PETRI DISHES HAVE 1 VENT ONLY, THE TRIPLE VENT DISHES HAVE 3 VENTS, BUT THE VENTS CAN BE CLOSED IF YOU REQUIRE NO VENTS ON YOUR PETRI DISHES. HOPE THIS INFORMATION IS OK. |
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| | syringe needle guage sizes
? |
| | Answer: WE DO SYRINGE NEEDLES TO FIT OUR CODE
SYOO1 AND SY002, SINGLE USE.
SY00337 IS 21 X 38, SY00339 IS 21 X 50
SY00340 IS 19 X 50, SY00342 IS 20 X 38
SY00344 IS 16 X 38, SY00345 IS 19 X 38
HOPE THIS IS OK, THANK YOU. |
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| | http://www.QKiMt6vfLbn1bD0zxU9QchzPHO25ZYPy.com? |
| | Answer: if you can email us with your query.
thank you |
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|
| | When will you be selling the new GHS Pictogram Hazard labels.? |
| | Answer: WE HAVE NO DETAILS AS YET BUT WE WILL BE SELLING THEM IN OUR NEW CATALOGUE,
SO THEY WILL BE AVAILABLE EARLY THIS YEAR. |
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| | http://www.l4kQDD30zNsyoG7pFkTOj6m6mXdUqdwF.com? |
| | Answer: ? |
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| | What is the thickness of the soda glass tubing wall, in mm please? |
| | Answer: THE THICKNESS OF THE SODA GLASS TUBING
ON TEST TUBES CODE TUO3403, TU03406,
IS 0.6MM.ON CODE TU03410 THE THICKNESS
IS 0.8MM. IT CAN VARY.WE ALSO DO HEAVY DUTY WHICH IS THICKER. |
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| | What is the internal diameter of your Soda glass tubing, please (wtu1025, 1026, 1027? |
| | Answer: do you mean these codes, tu10205, this is 6.6mm inside diameter, tu10206 is 8.4mm inside diameter and tu10207 is 10mm inside diameter. hope this is ok.
thank you. |
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| | hazard warning for iodine? |
| | Answer: our supplier has advised that iodine is hazardous. if you can email us we can supply an MSDS sheet for you.
thank you |
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| | How many days will it take for the cheque to clear? ? |
| | Answer: it varies????? |
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| | How many days will it take for the cheque to clear? ? |
| | Answer: it varies???? |
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| | I don't know what I want to do after university ? |
| | Answer: ?????? |
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