{"id":1727,"date":"2017-03-16T12:06:23","date_gmt":"2017-03-16T12:06:23","guid":{"rendered":"http:\/\/www.experimentoscientificos.es\/?p=1727"},"modified":"2018-11-22T11:48:44","modified_gmt":"2018-11-22T11:48:44","slug":"medir-densidad-del-agua","status":"publish","type":"page","link":"https:\/\/www.experimentoscientificos.es\/en\/densidad\/medir-densidad-del-agua\/","title":{"rendered":"How to measure the density of water"},"content":{"rendered":"<p>In this section we will look at <strong>how to measure the <a href=\"https:\/\/www.experimentoscientificos.es\/en\/densidad\/densidad-agua\/\">water density<\/a><\/strong>. The method of measurement will depend on how accurate you want to be. It also depends on the logistical situation you are in.<\/p>\n<p>The measurement of the density of water is very closely related to the measurement of the <a href=\"http:\/\/www.experimentoscientificos.es\/en\/agua-de-mar\/conductividad-del-agua\/\">conductivity<\/a> y <a href=\"http:\/\/www.experimentoscientificos.es\/en\/agua-de-mar\/salinidad-mar\/\">salinity<\/a> of water.<\/p>\n<h2>HOW TO MEASURE THE DENSITY OF WATER: DIFFERENT METHODS<\/h2>\n<h3>Measurement of density by knowing its volume and weight<\/h3>\n<p>This would be the most manual method of measurement. By applying this method of measurement, you will not forget the lifelong density formula, which is as follows: <strong>density=mass\/volume (expressed in grams per litre)<\/strong>. Therefore, all we have to do is weigh and measure the volume of the sample from which we want to obtain the density. The problem with this method of measurement is that it depends on the resolution and accuracy of the measuring equipment.<\/p>\n<p>As an example we will see how to measure the density of water in these cases:<\/p>\n<ul>\n<li>Distilled water<\/li>\n<li>Tap water<\/li>\n<li>Water with salts that we pour randomly<\/li>\n<\/ul>\n<ol>\n<li>We fill a container with 250ml of <strong>distilled water<\/strong> and weigh it. We must know the weight of the container beforehand in order to subtract it. We subtract the value that comes out of the weight of the container water from the weight of the container. With the result we have the density.<\/li>\n<\/ol>\n<ul>\n<li style=\"padding-left: 30px;\">Volume Water= 250ml<\/li>\n<li style=\"padding-left: 30px;\">Total weight=285 grams<\/li>\n<li style=\"padding-left: 30px;\">Container weight=35 grams<\/li>\n<li style=\"padding-left: 30px;\">Water weight=Total weight - Pesto container = 250grams<\/li>\n<li style=\"padding-left: 30px;\">Density of distilled water=Weight of water\/volume of water = 250\/0,250l=<strong>1000 grams\/litre<\/strong><\/li>\n<\/ul>\n<p style=\"padding-left: 30px;\">NOTE: It is possible that if you do the exercise, the weight of the water will not be exactly 250 grams, this is because the volume will not be exactly 250 grams and the weight of your measuring device will not be exact.<\/p>\n<p>2. Repeat the operation with <strong>tap water<\/strong><\/p>\n<p>In this case we get<\/p>\n<ul>\n<li style=\"padding-left: 30px;\">Volume Water= 250ml<\/li>\n<li style=\"padding-left: 30px;\">Total weight=285 grams<\/li>\n<li style=\"padding-left: 30px;\">Container weight=35 grams<\/li>\n<li style=\"padding-left: 30px;\">Weight water=Total weight - Pesto container = 250 grams<\/li>\n<li style=\"padding-left: 30px;\">Density of distilled water=Weight of water\/volume of water = 250\/0,250l=<strong>1000 grams\/litre<\/strong><\/li>\n<\/ul>\n<p>NOTE: Due to the low measuring accuracy of the devices we are using, for a density as low as that of tap water (3 grams per 1L of water), they are not suitable. More accurate devices are needed, or see the following methods.<\/p>\n<p>See more density values in: <a href=\"https:\/\/www.experimentoscientificos.es\/en\/densidad\/densidad-agua\/\">water density<\/a><\/p>\n<h3>Density measurement with a density meter<\/h3>\n<p>A density meter is a device that ultimately works by measuring the volume and weight of a water sample. The scale is then calibrated to give you the actual density values.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-1729\" src=\"http:\/\/www.experimentoscientificos.es\/wp-content\/uploads\/2017\/03\/densimetro1-300x300.jpg\" alt=\"Dens\u00edmetro\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.experimentoscientificos.es\/wp-content\/uploads\/2017\/03\/densimetro1-300x300.jpg 300w, https:\/\/www.experimentoscientificos.es\/wp-content\/uploads\/2017\/03\/densimetro1-150x150.jpg 150w, https:\/\/www.experimentoscientificos.es\/wp-content\/uploads\/2017\/03\/densimetro1-768x768.jpg 768w, https:\/\/www.experimentoscientificos.es\/wp-content\/uploads\/2017\/03\/densimetro1-1024x1024.jpg 1024w, https:\/\/www.experimentoscientificos.es\/wp-content\/uploads\/2017\/03\/densimetro1.jpg 1200w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>You have different types of density meters, calibrated for the density range you want to measure. For the distilled water and seawater ranges you can use one like the one in the picture, this one: \u00a0<a href=\"http:\/\/amzn.to\/2n2A5uJ\">http:\/\/amzn.to\/2n2zlG8<\/a><\/p>\n<h3><\/h3>\n<h3>MEASURED THROUGH DISSOLVED SOLIDS (TDS)<\/h3>\n<p>Dissolved solids is one of the most common methods for density and salinity measurement. This method works by measuring conductivity. The TDS meter has a factor that converts conductivity into parts per thousand.<\/p>\n<p>This method is known as <strong>TDS stands for total dissolved solids.\u00a0<\/strong>This method measures the\u00a0<strong>dissolved solids (salts).\u00a0<\/strong>To be considered\u00a0<strong>TDS<\/strong>The substances in the solution must be of such a size that they can pass a filtration of two microns, i.e. smaller than 2 microns.<\/p>\n<p>Let's see how to measure with a TDS in the section of conductivity\/salinity of the water. <a href=\"http:\/\/www.experimentoscientificos.es\/en\/agua-de-mar\/conductividad-del-agua\/\">Measurement of density through conductivity<\/a>.<\/p>\n<p><iframe loading=\"lazy\"  id=\"_ytid_88443\"  width=\"480\" height=\"270\"  data-origwidth=\"480\" data-origheight=\"270\" src=\"https:\/\/www.youtube.com\/embed\/_zzZ3w3RQao?enablejsapi=1&#038;autoplay=0&#038;cc_load_policy=0&#038;cc_lang_pref=&#038;iv_load_policy=1&#038;loop=0&#038;modestbranding=0&#038;rel=1&#038;fs=1&#038;playsinline=0&#038;autohide=2&#038;theme=dark&#038;color=red&#038;controls=1&#038;\" class=\"__youtube_prefs__  epyt-is-override  no-lazyload\" title=\"YouTube player\"  allow=\"fullscreen; accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen data-no-lazy=\"1\" data-skipgform_ajax_framebjll=\"\"><\/iframe><\/p>","protected":false},"excerpt":{"rendered":"<p>In this section we will look at how to measure the density of water. The method of measurement will depend on how accurate you want to be. It will also depend on the logistical situation you are in. The measurement of water density is closely related to the measurement of water conductivity and salinity. HOW TO [...]<\/p>","protected":false},"author":1,"featured_media":1729,"parent":2639,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"_acf_changed":false,"footnotes":""},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>C\u00f3mo medir la densidad del agua<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.experimentoscientificos.es\/en\/densidad\/medir-densidad-del-agua\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C\u00f3mo medir la densidad del agua\" \/>\n<meta property=\"og:description\" content=\"En este apartado vamos a ver c\u00f3mo medir la densidad del agua. 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