Questions tagged [equipment]
Questions regarding the equipment used in labs (such as flasks, tubes etc.), their operation and maintenance.
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Can stainless steel be electrically insulated with (oven-dried) Sodium Silicate Solution?
Can I electrically insulate stainless steel by painting Sodium Silicate solution on it and heating it to 200C for 30min or so?
The solution should be conductive, and I've been told (to be verified) ...
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Will Sodium Polyacrylate (SAP) absorb the gas from liquid ammonia?
I'm considering using sodium polyacrylate grains to absorb spills of a relatively strong Ammonium Hydroxide solution. Will the SAP (super absorbent polymer) only absorb the water, and in effect make ...
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Microfiltration for saturated solutions of highly hygroscopic compounds?
Is it possible to pass saturated solutions of compounds with very high solubility through filters with small pores (e.g. passing a saturated aqueous ZnCl2 solution at 90C through a 2mcm glassfiber ...
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Does adding NH3 to an HCl solution facilitate the dissolution of aluminum compounds?
If we compare the two solutions hereafter, which one would better leach/dissolve aluminum metal/compounds present at/near the inner surface of the glass:
Solution A: $10\,\%\, \ce{HCl + H2O}$
Solution ...
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Appropriate ways to remove aluminum from the surface of glass?
I'm looking for a way to treat the surface of borosilicate glassware such that it won't contaminate solutions of puriss reagents in conditions that pure $\ce{SiO2}$ wouldn't, yet keep the bulk ...
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Trial by fire: Safely heating sand without it agglomerating?
Wikipidia quotes a melting point of 1713C for sand.
I went on the beach to get some sand. I assume it's a mix of all kinds of stuff.
The finality is to prepare a big pile of clean sand to use as ...
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How does functionalized activated charcoal work?
If I understand correctly it is possible to trap stuff inside activated charcoal (AC) pores to give it specific retention properties (by exposing it to functionalizing compounds while heated to open ...
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Can I engrave borosilicate glassware without compromising its structural integrity?
Can I use a pen engraver (the kind that's like a tattoo gun with a diamond tip) to engrave my initials on labware without compromising it? I am in a lab space with a shared acid wash, and my glassware ...
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Is it better to use a smaller, more accurate measuring cylinder several times or a larger, less accurate one for the same volume?
I need to measure out 70 ml of liquid.
I have a 10 ml measuring cylinder with a maximum uncertainty of 0.1 ml and a 100 ml measuring cylinder with a maximum uncertainty of 1 ml.
I've calculated that ...
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How to identify a blow-out pipette?
Is my pipette a blow-out pipette?
I suspect that it is a blow-out pipette, though the double lines aren't rings. My guess is it is a TC blow-out pipette. It's a big 50 mL pipette, longer than my arm.
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What is the purpose of this glassware?
I have seen these small test tube looking doohickeys being supplied from many chinese suppliers, but never with any description as to what they are for. They almost invariably have the description &...
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Does mercury react with polycarbonate?
Looking around at various material compatibility charts, they seem quite divided on the compatibility of metallic mercury and polycarbonate. Some sources (here, here, or here) indicate that ...
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What is the product of ammonia reacting with silicone?
I used a soft silicone hose to carry ammonia at ~70 °C. I was surprised to later find the hose had hardened.
A quick materials compatibility search for silicone had given me a lot of info but an "...
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HDPE vs PP for storing pure aldehydes
I know both HDPE and PP have at least some degree of resistance to aldehydes, esters and aliphatic hydrocarbons.
I am concerned however about minute contamination over time of pure samples and so I ...
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Any plastic for long term storage of Puriss. Ethanol?
I'm being offered to share some puriss Ethanol. Can I store it long term in any plastic container without the slightest contamination/reaction from the plastic? I have HDPE, PET, but I could buy ...
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