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A laboratory experiment is an experiment conducted under highly controlled conditions (not necessarily a laboratory), where accurate measurements are possible. The researcher decides where the experiment will take place, at what time, with which participants, in what circumstances and using a standardized procedure.
Introduction Welcome to this blog that enlightens you on the principles of animal toxicity, specifically on “Understanding Acute, Subacute and Chronic Toxicity in Pharmacology”. Have you ever wondered how drugs are tested for safety before they are released into the market? This is where animal toxicity studies come into play. Animal toxicity refers to the …
Objectives: To understand the importance of measuring blood glucose level. To understand the principles of enzymatic estimation of glucose. Theory: Glucose is a simple sugar which is a permanent and immediate primary source of energy to all of the cells in our body. The glucose in blood is obtained from the food that …
Limit test for Lead Lead is a most undesirable impurity in medical compounds and comes through the use of sulphuric acid, lead-lined apparatus and glass bottles use for storage of chemicals. Principle: The limit test of lead is based on the reaction of lead and diphenylthiocabazone (dithizone) in alkaline solution to form lead dithizone complex …
Our Objective Our aim is to study the effect of different pH on the activity of salivary content, amylase on starch. Theory All living beings need the energy to survive. It is from the food we consume that we get our energy. We know that the energy we are getting is by the process of …
Our Objective Our aim is to study the effect of different temperatures on the activity of salivary content, amylase on starch. Theory All living beings need the energy to survive. It is from the food we consume that we get our energy. We know that the energy we are getting is by the process of …
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Aim: To perform the limit test for heavy metals for the given sample. Requirements: Nessler cylinders, 1ml bulb pipette, dilute acetic acid, dilute ammonia solution, hydrogen sulphide solution, pH paper: 3-4 range, lead standard solution (20 ppm Pb), glass rods. Principle: In this experiment, the test color obtained by the reaction of heavy metal impurities …
Aim: To perform the limit test for iron for the given sample. Requirements: Nessler cylinder, 2ml bulb pipette, 20% w/v iron-free citric acid, thioglycolic acid, ammonia solution, iron standard solution (20 ppm Fe), glass rods, red-litmus paper. Principle: In this experiment, the test color (purple) obtained by the reaction of iron impurities with mercaptoacetic acid …
Aim: To perform limit test for sulphates for the given sample. Requirements: Nessler cylinders, glass rod, 1ml bulb pipette, 2 ml graduate pipette, 5 M acetic acid, sulphate standard solution (10 ppm SO4), test sample, barium chloride solution, ethanolic sulphate standard solution (10 ppm SO4), 1ml graduate pipette. Principle: In this experiment, the test opalescence/turbidity …
Aim: To perform limit test for chlorides for the given sample. Requirements: Nessler cylinders, glass rod, measuring cylinders, 1ml bulb pipette, 10 ml bulb pipette, dilute nitric acid, 0.1 M silver nitrate, chloride standard solution (25 ppm Cl), test sample. Principle: In this experiment, the test opalescence obtained by the reaction of chloride impurities with …