Best Lab Equipment

Here are some more information for Calibration Weight:

Probably one of the less appreciated features of an analytical balance or a precision scale is that it is quite versatile. It can be used for a number of applications. Of course, both these types of weighing instruments are most commonly used in laboratories, but here too they can perform various functions.

At a basic level, an analytical balance measures mass to a very high degree of precision and accuracy. Unlike spring scales, differences in the local gravity do not affect their accuracy. Therefore, moving the balance will not affect the mass reading, because the pull of gravity equally affects the moments of force. The terms "balance" and "scale" are often used interchangeably, but there is a difference. A balance compares the mass of two sets of objects. On the other hand, a scale determines the mass of an object or set of objects.

Before choosing an analytical balance or precision scale, it is important to be clear about your requirements. The Kern series of analytical balances and precision scales, from Tovatech, has a wide range of equipment suitable for various applications. For example, the jobs you undertake may require measurements in both metric and non-metric units. In that case, you should choose a model that easily and conveniently switches between the desired measurement units.

Precision scales can also be used for "piece counting". This is the application where the instrument is used to count parts into a containing vessel, or to remove them. As with most weighing applications, you need to start with a reference point. The reference quantity can be established by counting out the required number of pieces, placing them in a container on the weighing pan and inputting the number pieces that are being weighed. Naturally, you have to adjust for the tare weight. While determining the reference weight for extremely small pieces, anomalies can be minimized by using a large number of pieces for the initial calculation. Counting is then carried out on the basis of the calculated average piece weight.

Suspended weighing - as "below balance" or "underfloor" weighing - is another useful application. This is employed when the objects being weighed are too large to be placed on the weighing pan. In this case, the balance is placed on a table which has an opening beneath. The object is then suspended from a hook beneath the scale. The Kern ABT balance is recommended for this application.

Other useful features available in Kern balances are a facility for both internal and external calibration; a rechargeable internal battery pack with a timed auto-off, in locations where a steady electric supply is not available. Some models also have Draft shields, which enhance the accuracy of weighing by removing the effect of air currents. These have the added advantage of protecting the weighing mechanism from dust.

In general a precision scale and its more sensitive cousin the analytical balance can perform a range of functions in the lab that go just beyond the traditional weighing aided by advances in technology and digital memory storage.

Firoze Hirjikaka is a retired Civil/Structural Engineer with a graduate degree from London University. He explores his passion for scientific & engineering equipment at Tovatech, a leading American supplier of analytical balances. For more details on this article please visit the analytical balance section of Tovatech's site.

A Weight-loss Method That Simply Works

I am just a regular guy who was overweight for years. I found a method for losing weight that worked for me and I will share it. However, I'm not a doctor or health care professional and I have always been fairly healthy. Please consult with your doctor to finalize a weight loss plan that is right for you.

STEP1: Is There a Problem?

Many people feel the grass is always greener on the other side. Being overweight is not the source of all a person’s problems. Is your current weight causing or likely to cause you health problems? Is your current weight making it harder for you to perform tasks at home and work?

STEP 2: Assess and Monitor the Problem

Calibrate your scale to read 0 when you are not standing on it. Weigh yourself consistently everyday and record your weight. Your weight will fluctuate several pounds throughout the day, so try to be consistent and honest with yourself (its just a number). After a week of recording your weight look at the results to see if your gaining weight, losing weight, or holding steady.

STEP 3: Search for an Activity You Enjoy That Happens To Be Exercise!

While I’m exercising, I never think about burning calories or losing weight. If I did then time would pass very slowly and I would want to quit. Instead, I let my mind wander freely on something else. The truth is I don’t exercise for the sake of exercising! I like to look for deer at a national park for an hour or two. While I’m looking I happen to be hiking. Look for one or more activities you can do frequently (group football or basketball may be fun, but how often will you play?). You may have to experience many different activities before you find one that works for you. Brainstorming activities doesn't lose weight, so get out there and try new things. It may take you some time to find an activity you like, but when you do it will be worth it.

STEP 4: Control Food Cravings

Food cravings can be spontaneous, strong, and relentless. Fatty, unhealthy, inexpensive and tasty food is easily available 24 hours a day. Cravings can be overbearing if you are hungry from trying to lose weight by eating less of everything. Try to eat healthy meals when you are hungry (lots of fruits and vegetables), not snacks and dessert. Anticipate cravings and have healthy food available. I find that exercise (your activity in step 3) suppresses my appetite.

STEP 5: Set Gradual Weight Change Goals

If your assessment results (step 2) show you are gaining weight then your first goal should not be to lose weight. Instead set a goal to keep your weight fairly constant (stop gaining weight) for a week. Next set a new realistic goal to lose a few pounds at a time. Remember that good results will motivate you more than anything will. Setting unrealistic goals may demoralize you.

STEP 6: Adjust Your Activity’s Intensity Duration and Frequency to Reach Your Goal

If my results from step 2 show I am gaining weight, then I may spend 2 hours looking for deer instead of 1 hour. I may look every day instead of every other day. I may decide to hike a little faster. I don’t recommend exercising at a dangerous intensity, duration, or frequency to accomplish unrealistic goals.

STEP 7: If your not satisfied with your results or your situation changes go back to step 3

Maybe your activity doesn’t have the calorie burning potential that you thought it might. Perhaps you have just grown tired of it. Don’t give up! Try something else. If a natural disaster closes the park near me then my situation has changed. I will go back to step 3 and search for a new activity.

About the Author

Hello my name is Jay. I was obese for several years until I finally took action and lost a lot of weight. If you are as tired of being overweight as I was, then try my Free Weight Loss Exercise Program.

what is a good household calibration weight?

I just bought a new pocket scale and dont wanna pay the unecessary few dollars since things arent going so good right now. Is there any household items that weigh the same weight everytime?

A pound of butter come's as close as dam is to swearing.

Forage Analysis and Determining Feed Quality in Dry Years
Many areas of Western Canada have come through a dry summer, and, in some areas of Alberta and Saskatchewan, weather conditions have reduced perennial and annual forage production by 75 per cent.

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