maatcilinder
Cilinderglas waarop een maatverdeling is aangebracht
Gevonden op http://www.woorden-boek.nl/woord/maatcilinder
(www.encyclo.nl/begrip/maatcilinder)
maatcilinder
maatcilinder zelfst.naamw. [scheikunde] een glazen cilinder met een maatverdeling Voorbeeld: `Een maatcilinder is handig voor het snel afmeten van een hoeveelheid oplosmiddel als de hoeveelheid niet al te nauwkeurig bepaald hoeft te wezen. ` Bron: Wikiwoordenboek - maatcilinder. Spel...
Gevonden op http://www.woorden.org/woord/maatcilinder (www.encyclo.nl/begrip/maatcilinder)
Maatcilinders zijn een onderdeel van de uitrusting van veel laboratoria. Een maatcilinder is een cilindrische vaas met platte bodem en een schenktuitje aan de bovenkant, waarbij op de zijkant een schaalverdeling is aangebracht waaraan men kan aflezen hoeveel vloeistof er in de maatcilinder zit. Het aflezen gebeurt op het laagste punt van de vloeistofoppervlakte, de zogenaamde meniscus. De nauwkeurigheid van het afgemeten volume wordt bepaald door de breedte van de cilinder en de breedte van de gebruikte maatstrepen.
Maatcilinders zijn er in vele grootten. Voor nauwkeurig werk worden meestal maatkolven gebruikt. Eenvoudige typen maatcilinder vindt men ook vaak in de keuken (http://nl.wikipedia.org/wiki/Maatcilinder).
Ook bij het brouwen gebruik je een maatcilinder, al is dat eigenlijk niet noodzakelijk. Het is wel handig om verspilling van je kostbare zelfgebrouwen bier te voorkomen. De maatcilinder biedt een perfecte emballage voor je meting met de hydrometer.
Hydrometer:
Dit is een instrument dat het waterverbuik meet en regisstreert. het wordt ook wel watermeter genoemd Gevonden op http://www.woonwebsite.nl/snelzoeker/woon-encyclopedie/18
hydrometer
zie densimeter.
hydrometer
hy - dro - me - ter [` hie-] de -woord (mannelijk) hydrometers vochtigheidsmeter
Gevonden op http://www.woorden-boek.nl/woord/hydrometer
HYDROMETER
1) Meetinstrument om dichtheid van vloeistoffen te bepalen 2) Watermeter
Gevonden op http://www.mijnwoordenboek.nl/puzzelwoordenboek/HYDROMETER/1
Hydrometer
De hydrometer (ook wel areometer genoemd) is een instrument dat wordt gebruikt voor het bepalen van de dichtheid van vloeistoffen. Het instrument is gebaseerd op de Wet van Archimedes en ziet eruit als een grote glazen dobber die aan de onderkant is gevuld met loodkorrels of kwik. Omdat de massa van de hydrometer bekend is en daarmee de massa van
Gevonden op http://nl.wikipedia.org/wiki/Hydrometer
Hydrometer
An instrument used for measuring the specific gravity of a liquid.
A hydrometer consists of a glass volume with a weight at the bottom and a graduated scale on the stem. The hydrometer is gently lowered into a volume of liquid and allowed to settle. The reading is taken at the top surface of the liquid (www.diracdelta.co.uk/science/source/h/y/
hydrometer/source.html#.VHGqo_mG-8c, www.schoolphysics.co.uk/age11-14/Matter/text/Hydrometers_/index.html, https://contrastique.wordpress.com/tag/hydrometer/, www.finevinewines.com/Using_your_Hydrometer.html).
Het principe zou door Archimedes zijn uitgewerkt om te bepalen of de kroon van de koning wel van echt goud was gemaakt (http://boomeria.org/physicslectures/archimedes/archimedes.html)
What are the different kinds of hydrometers and when do you use them?
Specific Gravity hydrometers can be used for almost any liquid. Specific Gravity is a dimensionless unit defined as the ratio of density of the material to the density of water. If the density of the substance of interest and the reference substance (water) are known in the same units (e.g., both in g/cm3 or lb/ft3), then the specific gravity of the substance is equal to its density divided by that of the reference substance (water =1 g/cm3)
Baume hydrometers are calibrated to measure specific gravity on evenly spaced scales; one scale is for liquids heavier than water, and the other is for liquids lighter than water.
BrIx (BX) hydrometers is for determining the percentage of weight by sucrose. One degree Brix is 1 gram of sucrose in 100 grams of solution and represents the strength of the solu tion as percentage by weight (% w/w) (strictly speaking, by mass). If the solution contains dissolved solids other than pure sucrose, then the °Bx only approximates the dissolved solid content. The °Bx is traditionally used in the wine, sugar, fruit juice, and honey industries.
API hydrometers, also known as The American Petroleum Institute index, is a measure of how heavy or light a petroleum liquid is compared to water. If its API gravity is greater than 10, it is lighter and floats on water; if less than 10, it is heavier and sinks. API gravity is thus an inverse measure of the relative density of a petroleum liquid and the density of water, but it is used to compare the relative densities of petroleum liquids. For example, if one petroleum liquid floats on another and is therefore less dense, it has a greater API gravity. Although mathematically, API gravity has no units (see the formula below), it is nevertheless referred to as being in “degrees”. API gravity is gradated in degrees on a hydrometer instrument. The API scale was designed so that most values would fall between 10 and 70 API gravity degrees.
Alcohol Proof hydrometers are used for distilling and rectifying and for waste liquors.
Isopropyl Alcohol hydrometers measure percent by volume of isopropyl alcohol.
Sodium Chloride hydrometers measure saturation and concentration of sodium chloride.
Salt Brine hydrometers are graduated in percent of either saturation of sodium chloride in water, or by weight of sodium chloride.
Calcium Chloride Salometers (a hydrometer for indicating the percentage of salt in a solution) are for determining the percentage of saturation, specific gravity or freezing point of CaCl2.
Draft Survey hydrometers determine the apparent density of sea/fresh water.
The size cylinder needed depends on the size of the hydrometer. The cylinder should be at least 1″ taller than the hydrometer,and should have a minimum diameter of 50mm (www.hbinstrument.com/hydrometer-faqs/).
Specific Gravity hydrometers can be used for almost any liquid. Specific Gravity is a dimensionless unit defined as the ratio of density of the material to the density of water. If the density of the substance of interest and the reference substance (water) are known in the same units (e.g., both in g/cm3 or lb/ft3), then the specific gravity of the substance is equal to its density divided by that of the reference substance (water =1 g/cm3)
Baume hydrometers are calibrated to measure specific gravity on evenly spaced scales; one scale is for liquids heavier than water, and the other is for liquids lighter than water.
BrIx (BX) hydrometers is for determining the percentage of weight by sucrose. One degree Brix is 1 gram of sucrose in 100 grams of solution and represents the strength of the solu tion as percentage by weight (% w/w) (strictly speaking, by mass). If the solution contains dissolved solids other than pure sucrose, then the °Bx only approximates the dissolved solid content. The °Bx is traditionally used in the wine, sugar, fruit juice, and honey industries.
API hydrometers, also known as The American Petroleum Institute index, is a measure of how heavy or light a petroleum liquid is compared to water. If its API gravity is greater than 10, it is lighter and floats on water; if less than 10, it is heavier and sinks. API gravity is thus an inverse measure of the relative density of a petroleum liquid and the density of water, but it is used to compare the relative densities of petroleum liquids. For example, if one petroleum liquid floats on another and is therefore less dense, it has a greater API gravity. Although mathematically, API gravity has no units (see the formula below), it is nevertheless referred to as being in “degrees”. API gravity is gradated in degrees on a hydrometer instrument. The API scale was designed so that most values would fall between 10 and 70 API gravity degrees.
Alcohol Proof hydrometers are used for distilling and rectifying and for waste liquors.
Isopropyl Alcohol hydrometers measure percent by volume of isopropyl alcohol.
Sodium Chloride hydrometers measure saturation and concentration of sodium chloride.
Salt Brine hydrometers are graduated in percent of either saturation of sodium chloride in water, or by weight of sodium chloride.
Calcium Chloride Salometers (a hydrometer for indicating the percentage of salt in a solution) are for determining the percentage of saturation, specific gravity or freezing point of CaCl2.
Draft Survey hydrometers determine the apparent density of sea/fresh water.
The size cylinder needed depends on the size of the hydrometer. The cylinder should be at least 1″ taller than the hydrometer,and should have a minimum diameter of 50mm (www.hbinstrument.com/hydrometer-faqs/).
View the hydrometer floating in the juice sample at eye level. Take the reading from the bottom of the meniscus (see illustration below). The balling/ brix scale is the brix or sugar percentage. In addition to the brix scale, a triple scale hydrometer offers a scale for specific gravity and one for potential alcohol. TEMPERATURE ADJUSTMENTS: Most hydrometers are calibrated for a sample of a certain temperature and will give adjustment factors in with their instructions.
Brix test is a measurement of dissolved solids in a juice/wine being tested. Should there be any alcohol in the wine sample, the test would be properly called a Balling. The actual testing procedure is, however, identical.
1. Adjust the temperature required as indicated on the hydrometer stem. If the sample contains any carbon dioxide gas, the gas should be removed by careful agitation (http://www.101winemaking.com/hydrometer.htm).