natgillin/translations-raw huggingface dataset:
Hydrochloric acid, c = 3 mol/l
Klorovodikova kislina, c = 3 mol/l
Filtration aid, e.g. Kieselguhr, Hyflo-supercel.
Filtracijsko sredstvo, npr. Kieselguhr, Hyflo-supercel
Extraction apparatus.
Naprava za ekstrakcijo.
If fitted with a siphon (Soxhlet apparatus), the reflux rate shall be such as to produce about 10 cycles per hour; if of the non-siphoning type, the reflux rate shall be about 10 ml per minute.
Če je opremljena s sifonom (naprava Soxhlet), je hitrost povratnega toka približno 10 ciklov na uro; če ni opremljena s sifonom, je hitrost povratnega toka približno 10 ml na minuto.
Extraction thimbles, free of matter soluble in light petroleum and having a porosity consistent with the requirements of point 4.1.
Kartuše za ekstrakcijo, ki ne vsebujejo materialov, topnih v petroletru, in s poroznostjo, ki je v skladu z zahtevami iz točke 4.1.
Drying oven, either a vacuum oven set at 75 ± 3 oC or an air-oven set at 100 ± 3 oC.
Sušilnik, vakuumski, nastavljen na 75 oC ± 3 oC, ali zračni, nastavljen na 100 oC ± 3 oC.
Procedure A (see point 8.1)
Postopek A (glej točko 8.1)
Weigh 5 g of the sample to the nearest 1 mg, transfer it to an extraction thimble (4.2) and cover with a fat-free wad of cotton wool.
5 g vzorca se natehta na 1 mg natančno, prenese v kartušo za ekstrakcijo (4.2) in pokrije s čepkom iz vate, ki ne vsebuje maščobe.
Place the thimble in an extractor (4.1) and extract for six hours with light petroleum (3.1).
Kartuša se postavi v ekstraktor (4.1) in šest ur ekstrahira s petroletrom (3.1).
Collect the light petroleum extract in a dry, weighed flask containing fragments of pumice stone.
Ekstrakt petroletra se zbere v suho stehtano bučko, v kateri so delci plovca.
Distil off the solvent.
Topilo se oddestilira.
Dry the residue maintaining the flask for one and a half hours in the drying oven (4.3).
Ostanek se osuši tako, da se bučka za uro in pol postavi v sušilnik (4.3).
Leave to cool in a desiccator and weigh.
Pusti se, da se ohladi v eksikatorju, in stehta.
Dry again for 30 minutes to ensure that the weight of the oils and fats remains constant (loss in weight between two successive weighings must be less than or equal to 1 mg).
Ponovno se suši 30 minut, da se zagotovi ohranitev konstantne mase olj in maščob (izguba mase med dvema zaporednima tehtanjema ne sme presegati 1 mg).
Weigh 2,5 g of the sample to the nearest 1 mg (see point 8.2), place in a 400 ml beaker or a 300 ml conical flask and add 100 ml of hydrochloric acid (3.3) and fragments of pumice stone.
2,5 g vzorca se natehta na 1 mg natančno (glej točko 8.2), prenese v 400-mililitrsko čašo ali 300-mililitrsko erlenmajerico in ter doda 100 ml klorovodikove kisline (3.3) in delci plovca.
Cover the beaker with a watch glass or fit the conical flask with a reflux condenser.
Čaša se pokrije z urnim steklom ali pa se erlenmajerica spoji s kondenzatorjem povratnega toka.
Bring the mixture to a gentle boil over a low flame or a hot-plate and keep it there for one hour.
Pri nizkem plamenu ali na električnem kuhalniku se mešanica počasi zavre in se pusti rahlo vreti eno uro.
Do not allow the product to stick to the sides of the container.
Paziti je treba, da se vzorec ne oprijema sten posode.
Cool and add a quantity of filtration aid (3.4) sufficient to prevent any loss of oil and fat during filtration.
Ohladi se in doda toliko filtracijskega sredstva (3.4), da med filtracijo ne pride do izgub olja in maščob.
Filter through a moistened, fat-free, double filter paper.
Filtrira se skozi navlažen, dvojni filtrirni papir, ki ne vsebuje maščob.
Wash the residue in cold water until a neutral filtrate is obtained.
Ostanek se spere s hladno vodo, dokler filtrat ni nevtralen.
Check that the filtrate does not contain any oil or fats.
Prepričati se je treba, da filtrat ne vsebuje nobenih olj ali maščob.
Their presence indicates that the sample must be extracted with light petroleum, using Procedure A, before hydrolysis.
Njihova prisotnost pomeni, da se mora vzorec pred hidrolizo ekstrahirati s petroletrom po postopku A.
Place the double filter paper containing the residue on a watch glass and dry for one and a half hours in the air oven (4.3) at 100 ± 3 oC.
Dvojni filtrirni papir, na katerem je ostanek, se prenese na urno steklo in se uro in pol suši v sušilniku (4.3) pri 100 oC ± 3 oC.
Place the double filter paper containing the dry residue in an extraction thimble (4.2) and cover with a fat-free wad of cotton wool.
Dvojni filtrirni papir s suhim ostankom se prenese v kartušo za ekstrahiranje (4.2) in pokrije s čepkom iz vate, ki ne vsebuje maščob.
Place the thimble in an extractor (4.1) and proceed as indicated in the second and third paragraphs of point 5.1.
Kartuša se postavi v ekstraktor (4.1), nato pa se nadaljuje, kakor je navedeno v drugem in tretjem odstavku točke 5.1.
Expression of result
Prikaz rezultatov
Express the weight of the residue as a percentage of the sample.
Masa ostanka se izrazi kot masni delež vzorca.
The difference between the results of two parallel determinations carried out on the same sample by the same analyst shall not exceed:
Razlika med rezultatoma dveh vzporednih določanj, ki jih na istem vzorcu izvaja isti analitik, ne presega:
0,2 %, in absolute value, for contents of crude oils and fats lower than 5 %,
0,2 % absolutne vrednosti za vsebnosti surovih olj in maščobe, nižje od 5 %,
4,0 % relative to the highest result for contents of 5 % to 10 %,
4,0 % višjega rezultata za vsebnosti 5–10 %,
0,4 %, in absolute value, for contents above 10 %.
0,4 % absolutne vrednosti za vsebnosti nad 10 %.
For products with a high content of oils and fats, which are difficult to crush or unsuitable for drawing a homogeneous reduced test sample, proceed as follows.
Pri proizvodih z visoko vsebnostjo olj in maščob, ki jih je težko zdrobiti ali so neprimerni za pripravo homogenega zmanjšanega skupnega preskusnega vzorca, se uporabi naslednji postopek.
Weigh 20 g of the sample to the nearest 1 mg and mix with 10 g or more of anhydrous sodium sulfate (3.2).
20 g vzorca se natehta na 1 mg natančno in zmeša z 10 g ali več brezvodnega natrijevega sulfata (3.2).
Extract with light petroleum (3.1) as indicated in point 5.1.
Ekstrahira se s petroletrom (3.1), kakor je navedeno v točki 5.1.
Make up the extract obtained to 500 ml with light petroleum (3.1) and mix.
Ekstrakt se dopolni s petroletrom do 500 ml (3.1) in premeša.
Take 50 ml of the solution and place in a small, dry, weighed flask containing fragments of pumice stone.
50 ml raztopine se prenese v majhno suho stehtano bučko, v kateri so delci plovca.
Distil off the solvent, dry and proceed as indicated in the last paragraph of point 5.1.
Oddestilira se topilo, se osuši, nato pa se nadaljuje, kakor je določeno v zadnjem odstavku točke 5.1.
Eliminate the solvent from the extraction residue left in the thimble, crush the residue to a fineness of 1 mm, return it to the extraction thimble (do not add sodium sulfate) and proceed as indicated in the second and third paragraphs of point 5.1.
Iz ostanka po ekstrakciji v kartuši se odstrani topilo, ostanek se zdrobi do velikosti delcev 1 mm, vrne v kartušo za ekstrakcijo (natrijev sulfat se ne doda), nato pa se nadaljuje, kakor je določeno v drugem in tretjem odstavku točke 5.1.
Calculate the content of oils and fats as a percentage of the sample by using the following formula:
Vsebnost olj in maščob kot masni delež vzorca se izračuna po naslednji formuli:
weight in grams of the residue after the first extraction (aliquot part of the extract),
masa ostanka po prvi ekstrakciji (alikvot ekstrakta) v gramih;
weight in grams of the residue after the second extraction.
masa ostanka po drugi ekstrakciji v gramih.
For products low in oils and fats the test sample may be increased to 5 g.
Pri proizvodih z nizko vsebnostjo olj in maščob se lahko preskusni vzorec poveča na 5 g.
Pet foods containing a high content of water may need to be mixed with anhydrous sodium sulfate prior to hydrolysis and extraction as per Procedure B.
Hrano za hišne živali, ki vsebuje veliko vode, je treba včasih pred hidrolizo in ekstrakcijo po postopku B zmešati z brezvodnim natrijevim sulfatom.
In paragraph 5.2 it may be more effective to use hot water in place of cold water to wash the residue after filtration.
Pri točki 5.2 je za spiranje ostanka po filtraciji morda učinkoviteje uporabiti vročo vodo namesto hladne.
The drying time of 1,5 h may need to be extended for some feed.
Pri nekateri krmi je morda treba podaljšati čas sušenja na več kot uro in pol.
Excessive drying shall be avoided as this can lead to low results.
Odvečnemu sušenju se izogiba, saj lahko povzroči nizke rezultate.
A microwave oven can also be used.
Uporabi se lahko tudi mikrovalovna pečica.
I. DETERMINATION OF CRUDE FIBRE
I. DOLOČANJE SUROVIH VLAKEN
This method makes it possible to determine fat-free organic substances in feed which are insoluble in acid and alkaline media and are conventionally described as crude fibre.
Ta metoda omogoča določanje nemastnih organskih snovi v krmi, ki so netopne v kislih in baznih medijih ter so ponavadi poimenovane surova vlakna.
The sample, defatted where necessary, is treated successively with boiling solutions of sulphuric acid and potassium hydroxide of specified concentrations.
Vzorec se po potrebi razmasti in zaporedno obdela s specificiranimi koncentracijami vrelih raztopin žveplove kisline in kalijevega hidroksida.
The residue is separated by filtration on a sintered-glass filter washed, dried, weighed and ashed within a range of 475 to 500 oC.
Ostanek se loči s filtracijo skozi filter iz sintranega stekla, spere, posuši, stehta in upepeli pri 475–500 oC.
The loss of weight resulting from ashing corresponds to the crude fibre present in the test sample.
Izguba teže pri upepeljevanju ustreza vsebnosti surovih vlaken v preskusnem vzorcu.
Sulphuric acid, c = 0,13 mol/l.
Žveplova kislina, c = 0,13 mol/l
Anti-foaming agent (e.g. n-octanol).
Sredstvo proti penjenju (npr. n-oktanol)
Filter aid (Celite 545 or equivalent), heated at 500 oC for four hours (8.6).
Filtrirno sredstvo (Celite 545 ali enakovredno), segreto na 500 oC za štiri ure (8.6)
Light petroleum boiling-range 40 to 60 oC.
Petroleter, vrelišče 40–60 oC
Hydrochloric acid, c = 0,5 mol/l.
Klorovodikova kislina, c = 0,5 mol/l
Potassium hydroxide solution, c = 0,23 mol/l.
Raztopina kalijevega hidroksida, c = 0,23 mol/l
Heating unit for digestion with sulphuric acid and potassium hydroxide solution, equipped with a support for the filter crucible (4.2) and provided with an outlet tube with a tap to the liquid outlet and vacuum, possibly with compressed air.
Enota za segrevanje za razklop z žveplovo kislino in raztopino kalijevega hidroksida, opremljena z dodatkom za filtrirni lonček (4.2) in odtočno cevjo, ki je preko zamaška priklopljena na tekočino in vakuum, po možnosti s stisnjenim zrakom.
Before use each day preheat the unit with boiling water for five minutes.
Pred vsako uporabo se enota pet minut segreva z vrelo vodo.
Glass filter crucible with fused sintered glass filter plate pore size 40-90 μm.
Stekleni filtrirni lonček z nameščeno filtrirno ploščo iz sintranega stekla in velikosti por 40–90 μm.
Before first use, heat to 500 oC for a few minutes and cool (8.6).
Pred prvo uporabo ga je treba za nekaj minut segreti na 500 oC in ohladiti (8.6).
Cylinder of at least 270 ml with a reflux condenser, suitable for boiling.
Valj, volumna vsaj 270 ml, s kondenzatorjem povratnega toka, primernim za vretje
Drying oven with thermostat.
Sušilnik s termostatom
Muffle furnace with thermostat.
Žarilna peč s termostatom
Extraction unit consisting of a support plate for the filter crucible (4.2) and with a discharge pipe with a tap to the vacuum and liquid outlet.
Enota za ekstrakcijo, sestavljena iz podporne plošče za filtrirni lonček (4.2) in odtočne cevi, ki je preko zamaška priklopljena na vakuum in tekočino.
Connecting rings to assemble the heating unit (4.1), crucible (4.2) and cylinder (4.3) and to connect the cold extraction unit (4.6) and crucible.
Obročki, ki povežejo enoto za segrevanje (4.1), lonček (4.2) in valj (4.3) ter enoto za hladno ekstrakcijo (4.6) in lonček.
Weigh out 1 g of the prepared sample to the nearest 1 mg and place it in the crucible (4.2), (see observations 8.1, 8.2 and 8.3) and add 1 g of filter aid (3.3).
1 g pripravljenega vzorca se natehta na 1 mg natančno in prenese v lonček (4.2) (glej opombe 8.1, 8.2 in 8.3), čemur se doda 1 g filtrirnega sredstva (3.3).
Assemble the heating unit (4.1) and the filter crucible (4.2), then attach the cylinder (4.3) to the crucible.
Najprej se povežeta enota za segrevanje (4.1) in filtrirni lonček (4.2), nato pa valj (4.3) in lonček.
Pour 150 ml of boiling sulphuric acid (3.1) into the assembled cylinder and crucible and if necessary add a few drops of anti-foaming agent (3.2).
V povezana valj in lonček se nalije 150 ml vrele žveplove kisline (3.1) in po potrebi nekaj kapljic sredstva proti penjenju (3.2).
Bring the liquid to the boil within 5 ± 2 minutes and boil vigorously for exactly 30 minutes.
Tekočina se zavre v 5 ± 2 minutah ter pusti močno vreti natančno 30 minut.
Open the tap to the discharge pipe (4.1) and, under vacuum, filter the sulphuric acid through the filter crucible and wash the residue with three consecutive 30 ml portions of boiling water, ensuring that the residue is filtered dry after each washing.
Odpre se zamašek na odtočni cevi (4.1), žveplova kislina se pod vakuumom filtrira skozi filtrirni lonček, ostanek pa se trikrat spere s po 30 ml vrele vode, da je filtrirni ostanek po vsakem spiranju suh.
Close the outlet tap and pour 150 ml boiling potassium hydroxide solution (3.7) to the assembled cylinder and crucible and add a few drops of anti-foaming agent (3.2).
Odtočni zamašek se zapre, v povezana valj in lonček se nalije 150 ml vrele raztopine kalijevega hidroksida (3.7), nato pa se doda nekaj kapljic sredstva proti penjenju (3.2).
After the final washing and drying, disconnect the crucible and its contents and reconnect it to the cold extraction unit (4.6).
Po končnem spiranju in sušenju se lonček z vsebino odklopi in priklopi na enoto za hladno ekstrakcijo (4.6).
Apply the vacuum and wash the residue in the crucible with three consecutive 25 ml portions of acetone (3.4) ensuring that the residue is filtered dry after each washing.
Ostanek v lončku se pod vakuumom trikrat spere s po 25 ml acetona (3.4), da je filtrirni ostanek po vsakem spiranju suh.
Dry the crucible to constant weight in the oven at 130 oC.
Lonček se suši v sušilniku pri 130 oC do konstantne teže.
After each drying cool in the desiccator and weigh rapidly.
Po vsakem sušenju se ohladi v eksikatorju in hitro stehta.
Place the crucible in a muffle furnace and ash to constant weight (loss in weight between two successive weightings must be less than or equal to 2 mg) at 475 oC to 500 oC for at least 30 minutes.
Lonček se postavi v žarilno peč in pri 475–500 oC žari najmanj 30 minut do konstantne teže (izguba teže med dvema zaporednima tehtanjema ne sme presegati 2 mg).
After each heating cool first in the furnace and then in the desiccator before weighing.
Po vsakem segrevanju in pred merjenjem se lonček najprej ohladi v peči, nato pa še v eksikatorju.
Carry out a blank test without the sample.
Slepi preskus se izvede brez vzorca.
Loss of weight resulting from ashing must not exceed 4 mg.
Izguba teže pri žarjenju ne sme presegati 4 mg.
The crude fibre content as a percentage of the sample is given by the expression:
Vsebnost surovih vlaken, izražena kot masni delež vzorca, se izračuna po naslednji formuli:
m weight of sample in g,
m masa vzorca v gramih;
loss of weight after ashing during the determination, in g,
izguba mase po žarjenju pri določanju v gramih;
loss of weight after ashing during the blank test, in g.
izguba mase po žarjenju pri slepem preskusu v gramih.
The difference between two parallel determinations carried out on the same sample must not exceed:
Razlika med rezultatoma dveh vzporednih določanj, izvedenih na istem vzorcu, ne sme presegati:
0,6 % in absolute value for crude fibre contents lower than 10 %,
0,6 % absolutne vrednosti za vsebnosti surovih vlaken, manjše od 10 %,
6 % relative to the higher result, for crude fibre contents equal to or greater than 10 %.
6 % višje vrednosti za vsebnosti surovih vlaken 10 % ali več.
Feed containing more than 10 % crude fat must be defatted prior to analysis with light petroleum (3.5).
Krmo, ki vsebuje več kakor 10 % surovih maščob, je treba pred analizo razmastiti s petroletrom (3.5).
Connect the filter crucible (4.2) and its contents to the cold extraction unit (4.6) and apply vacuum and wash the residue with three consecutive 30 ml portions of light petroleum, ensuring that the residue is dry.
Filtrirni lonček (4.2) z vsebino se poveže z enoto za hladno ekstrakcijo (4.6), ostanek pa se pod vakuumom trikrat spere s po 30 ml petroletra, da je ostanek suh.
Connect the crucible and its contents to the heating unit (4.1) and continue as described under 5.
Lonček z vsebino se poveže z enoto za segrevanje (4.1), nadaljuje pa se v skladu s točko 5.
Feed containing fats which cannot be extracted directly with light petroleum (3.5) must be defatted as shown in 8.1 and defatted once more after boiling with acid.
Krmo, ki vsebuje maščobe, ki se ne morejo neposredno ekstrahirati s petroletrom (3.5), je treba razmastiti, kakor je navedeno v točki 8.1, in ponovno razmastiti po vretju s kislino.
After boiling with acid and the subsequent washing connect the crucible and its contents to the cold extraction unit (4.6) and wash three times with 30 ml acetone followed by three further washings with 30 ml portions of light petroleum.
Po vretju s kislino in nadaljnjim spiranjem se lonček z vsebino poveže z enoto za hladno ekstrakcijo (4.6) ter trikrat spere s po 30 ml acetona in trikrat s po 30 ml petroletra.
Filter under vacuum until dry and continue the analysis as described under 5, beginning with potassium hydroxide treatment.
Filtrira se pod vakuumom do suhega stanja, nadaljuje pa se, kakor je navedeno v točki 5, pri čemer se začne z dodajanjem kalijevega hidroksida.
After each addition let the sample stand for about one minute before filtering.
Po vsakem dodajanju je treba vzorec pustiti stati približno eno minuto, preden se filtrira.
Wash once with 30 ml water and then continue as described under 5.
Ponovno se spere s 30 ml vode, nato pa se nadaljuje, kakor je navedeno v točki 5.
If an apparatus in the form of a stand is used (several crucibles attached to the same heating unit) no two individual determinations on the same sample for analysis may be carried out in the same series.
Če se uporablja naprava v obliki stojala (številni lončki, povezani na isto enoto za segrevanje), se v isti seriji ne smeta opraviti posamezni določanji na istem vzorcu za analizo.
If after boiling it is difficult to filter the acidic and basic solutions, use compressed air through the discharge pipe of the heating unit and then continue filtering.
Če je po vretju težko filtrirati kisle in bazične raztopine, se uporabi stisnjen zrak skozi odtočno cev enote za segrevanje in se nato nadaljuje s filtriranjem.
The temperature for ashing shall not be higher than 500 oC in order to extend the lifetime of the glass filter crucibles.
Temperatura žarjenja ne presega 500 oC, da se podaljša obstojnost steklenih filtrirnih lončkov.
Care must be taken to avoid excessive thermal shock during heating and cooling cycles.
Potrebna je previdnost, da se preprečijo odvečni toplotni šoki med segrevanjem ali hlajenjem.
DETERMINATION OF SUGAR
DOLOČANJE SLADKORJA
This method makes it possible to determine the amount of reducing sugars and total sugars after inversion, expressed as glucose or where appropriate as sucrose, converting by the factor 0,95.
Ta metoda omogoča določanje količine reducirajočih sladkorjev in celotnih sladkorjev po inverziji, izraženih kot glukoza ali, kadar je to primerno, saharoza s faktorjem preračunavanja 0,95.
It is applicable to compound feed.
Uporablja se za krmne mešanice.
Special methods are provided for other feed.
Za drugo krmo se uporabljajo posebne metode.
Where necessary, lactose shall be measured separately and taken into account when calculating the results.
Kadar je primerno, se laktoza izmeri ločeno in upošteva pri izračunu rezultata.
The sugars are extracted in dilute ethanol; the solution is clarified with Carrez solutions I and II.
Sladkorji se ekstrahirajo z razredčenim etanolom in raztopina se zbistri z raztopinama Carrez I in II.
After eliminating the ethanol, the quantities before and after inversion are determined by the Luff-Schoorl method.
Po odstranitvi etanola se določijo količine pred inverzijo in po njej po Luff-Schoorlovi metodi.
Ethanol solution 40 % (v/v) density: 0,948 g/ml at 20 oC, neutralised to phenolphthalein.
Etanol, 40-odstotna raztopina (v/v), gostota: 0,948 g/ml pri 20 oC, nevtraliziran proti fenolftaleinu
Carrez solution I: dissolve in water 21,9 g of zinc acetate Zn (CH3COO)2 2H2O and 3 g of glacial acetic acid.
Raztopina Carrez I: 21,9 g cinkovega acetata Zn (CH3COO)2 × 2H2O in 3 g ledoceta se raztopijo v vodi.
Carrez solution II: dissolve in water 10,6 g of potassium ferrocyanide K4Fe (CN)6 3H2O.
Raztopina Carrez II: 10,6 g kalijevega ferocianida K4 Fe (CN)6 3H2O se raztopi v vodi.
Methyl orange, solution 0,1 % (w/v).
Metiloranž 0,1-odstotna raztopina (m/v)
Hydrochloric acid 4 mol/litre.
Klorovodikova kislina, 4 mol/l
Hydrochloric acid 0,1 mol/litre.
Klorovodikova kislina, 0,1 mol/l
Luff-Schoorl reagent:
Luff-Schoorlov reagent:
Stirring carefully, pour the citric acid solution (3.8.2) into the sodium carbonate solution (3.8.3).
Med previdnim mešanjem se v raztopimo natrijevega karbonata (3.8.3) vlije raztopina citronske kisline (3.8.2).
Add the copper sulphate solution (3.8.1) and make up to 1 litre with water.
Doda se raztopina bakrovega sulfata (3.8.1), nato pa se dopolni z vodo do 1 litra.
Leave to settle overnight and filter.
Pusti se čez noč in nato filtrira.
Copper sulphate solution: dissolve 25 g of copper sulphate, Cu SO4 5H2O, free from iron, in 100 ml of water.
Raztopina bakrovega sulfata: v 100 ml vode se raztopi 25 g bakrovega sulfata (Cu SO4 5H2O), ki ne vsebuje železa.
Citric acid solution: dissolve 50 g of citric acid, C6H8O7·H2O in 50 ml of water.
Raztopina citronske kisline: v 50 ml vode se raztopi 50 g citronske kisline (C6H8O7.H2O).
Sodium carbonate solution: dissolve 143,8 g of anhydrous sodium carbonate in approximately 300 ml of warm water.
Raztopina natrijevega karbonata: v približno 300 ml tople vode se raztopi 143,8 g brezvodnega natrijevega karbonata.
Sodium thiosulphate solution 0,1 mol/litre.
Raztopina natrijevega tiosulfata, 0,1 mol/l.
Starch solution: add a mixture of 5 g of soluble starch in 30 ml of water to 1 litre of boiling water.
Raztopina škroba: v liter vrele vode se doda suspenzija 5 g topnega škroba v 30 ml vode.
Boil for three minutes, leave to cool and if necessary add 10 mg of mercuric iodide as a preservative.
Pusti se vreti 3 minute, nato se ohladi in po potrebi doda 10 mg živosrebrovega jodida kot konzervansa.
Sulphuric acid 3 mol/litre.
Žveplova kislina, 3 mol/l
Potassium iodide, solution 30 % (w/v).
Kalijev jodid, 30-odstotna raztopina (m/v)
Granulated pumice stone boiled in hydrochloric acid, washed in water and dried.
Zdrobljen plovec, prevret v klorovodikovi kislini, opran z vodo in osušen
3-methylbutan-l-ol.
3-metilbutan-l-ol
Extraction of sample
Ekstrakcija vzorca
Weigh 2,5 g of the sample to the nearest mg and place in a 250 ml volumetric flask.
2,5 g vzorca se natehta na 1 mg natančno in prenese v 250-mililitrsko merilno bučko.
Add 200 ml of ethanol (3.1) and mix in the tumbler for one hour.
Doda se 200 ml etanola (3.1) in v mešalniku meša 1 uro.
Add 5 ml of Carrez solution I (3.2) and stir for approximately 30 seconds.
Doda se 5 ml raztopine Carrez I (3.2) in meša približno 30 sekund.
Add 5 ml of Carrez solution II (3.3) and again stir for one minute.
Doda se 5 ml raztopine Carrez II (3.3) in ponovno meša 1 minuto.
Make up to volume with ethanol (3.1), homogenise and filter.
Dopolni se z etanolom (3.1) do oznake, homogenizira in filtrira.