What is the Difference Between Repeatability and ...
Jun 27, 2014 · In the context of an experiment, repeatability measures the variation in measurements taken by a single instrument or person under the same conditions, while reproducibility measures whether an entire study or experiment can be reproduced in its entirety. Within scientific write ups, reproducibility and repeatability are often reported as ...
How to Use a Pipette in the Lab - A Complete Guide - Labmate …
May 10, 2021 · Micro and macro pipettes. Designed with precision in mind, micropipettes allow scientists to accurately extract, transport and dispense liquids in the microlitre range. Micropipette capacity ranges from between 1 and 1000 microlitres. Macropipettes are designed for larger quantities and offer a capacity range of between 0.25–5 mL.
What is a Good Aerobic Plate Count? - Labmate Online
May 27, 2022 · Aerobic Plate Count is often used to detect a family of “indicator” bacteria called Enterobacteriaceae. The family includes several strains found in the intestinal tracts of warm-blooded animals, such as Salmonella and Shigella. APC results that indicate Enterobacteriaceae concentrations of more than 104 per gram suggest food is ...
What Are the Different Types of Laboratory Glassware? - Labmate …
Dec 4, 2014 · Volumetric flasks. Similar to beakers, these are used to hold samples, but usually come in a conical or spherical shape with a tapering neck. Condensers. Specifically used to cool heated liquid or gas. Retorts. These are used for distillation purposes. Funnels. The tapered neck of a funnel allows easy pouring of a liquid into a narrow orifice.
What is the Aerobic Plate Count (APC)? - Labmate Online
May 25, 2022 · From ready-to-eat food to wastewater, Aerobic Plate Count (APC) is used to estimate bacterial populations in samples. Results offer an indication of how many aerobic mesophilic bacteria - organisms that grow at standard body temperatures of between 20 and 40°C - are present in the sample. The term Aerobic Plate Count is widely used, though it ...
How Accurate is Carbon Dating? - Labmate Online
May 20, 2014 · At its most basic level, carbon dating is the method of determining the age of organic material by measuring the levels of carbon found in it. Specifically, there are two types of carbon found in organic materials: carbon 12 (C-12) and carbon 14 (C-14). It is imperative to remember that the material must have been alive at one point to absorb ...
Is COVID-19 Man-Made or Natural? - Labmate Online
Apr 7, 2020 · COVID-19 a product of natural evolution. While there has been speculation that the virus was developed in laboratories and released either accidently or as a form of bioterrorism, findings published in the journal Nature Medicine confirm COVID-19 is a product of natural evolution. The study was titled 'The proximal origin of SARS-CoV-2' and ...
A Brief Guide of Pipette Types - Labmate Online
Jul 03 2014. This guide aims to illustrate the various uses of some of the most common types of pipettes found in laboratories today. In a laboratory context, pipettes are used to transfer fluids from one container to another swiftly and accurately. While there are many different types of pipette are available, it’s important to remember that ...
What's the Difference Between NMR and MRI? - Labmate Online
Oct 21, 2021 · The differences between NMR and MRI. While NMR uses radiation frequencies to generate information, MRI generates information based on radiation intensity. In NMR spectroscopy, the goal is to determine the chemical structure of matter whereas. In MRI imaging, the goal is to generate detailed images of the body.
What Are Nitrosamines and Where Are they Found? - Labmate …
Dec 29, 2022 · Nitrosamines are common in highly processed foods such as cured meat and alcoholic beverages. The unintentional byproducts form when nitrates react with organic compounds called amines. Widely used in the food and beverage sector, nitrates are natural chemicals that prevent the growth of bacteria. They’re also used to enhance flavour and colour.