Science & Laboratory - Page 7 - Recent Questions, Troubleshooting & Support


The serial number will be on the packaging that came with the software that you legally bought.

Fruity Loops... | Answered on Dec 06, 2017


Your question is hard to answer without more detail, including movement rate and required magnification. For relatively slow moving objects you can use a movable stage (X-Y stepper motors tied to a computer). Usually the direction of motion is erratic or unknown, and some digital tracking software will have to be written to drive the steppers so as to follow the designated object of interest. This may be something you have to develop yourself, although there may be some "tracking" software commercially available (or adaptable).

Note that you usually cannot take a video of the object as you track it, due to the quantum action of the stepper motors. However, this does not keep you from taking a series of stills (step - capture - step - capture - step ... etc.) and turning them back into a stop-action video. There are a lot of free or cheap programs out there to do that.

If the motion of the object is rapid, then you have a much bigger problem. One project I did some years back had this problem, and we could not actively track the sudden motion with a microscope. What we did instead was to reduce the microscope magnification, and significantly up the resolution of the high-speed camera (and yes, that was very expensive). At 1500 FPS, we could capture the object as it moved rapidly across the stage, then post-process the resulting frames to center on the object. The obvious limit here is that the object needs to cover a relatively small portion of the overall picture - which limits the magnification you can use. Of course, the offsetting advantage of this method is that you pay more for the camera, but don't have to have a movable stage on the scope.

Science &... | Answered on Dec 06, 2017


1. To hatch the eggs, first prepare a brine solution. Pour the entire contents of a vial containing sea salt into a quart of
tap water. Add the brine shrimp eggs into the
solution. Allow the solution to stand at room
temperature (70 - 80F or 21 - 26C) for 24
to 48 hours and the eggs will hatch into nauplius larvae (this is the first stage of development after leaving the eggs).
2. Place some of the larvae into one of the compartments of the shrimp hatchery .
3. Place some fresh brine solution in another
compartment. Add a small amount of yeast to
this new solution. Then, using the eyedropper, transfer some of the larvae into this compartment as well. The yeast will
serve as food and produce oxygen for the larvae as they develop into maturity. Without food and oxygen, the shrimp cannot develop
and will die. Mature brine shrimp are known
as Artemia Salina.
Note: Using an eyedropper with just the right
pressure to get a desired amount of liquid
onto a slide can be harder than it looks. Take
out a clean slide and practice squeezing a
drop of water onto the slide until you feel
comfortable that you can control the size of
the drop that you're squeezing out.
4. Observe the life cycle of the shrimp as they
grow: the dried eggs, the hatching eggs, the
developing larvae, and finally, the mature
shrimp.
5. The mature shrimp may be fed to fish in an
aquarium if you so wish. However, first
remove the shrimp from the brine solution
and place them into fresh water. An increase
in salt may harm the fish in the aquarium.
NOTE: Use the color filter especially when looking at clear or dim specimens.

Vivitar 40 Piece... | Answered on Nov 27, 2017


The electrode you have is a combination electrode with an integral calomel reference half-cell and built-in temperature probe. Since the temperature reading is good, the temperature probe is okay. It isn't part of the pH circuits anyway. (Your meter uses the temperature to calculate a temperature correction of pH.) Something else is going on with the electrode proper. Its funny behavior suggests to me that it has dried out internally.
pH electrodes don't last forever. How old is this one? If it's an old one, it's probably time to replace it. If it's new and doesn't work, it may be under warranty.
If you shop for a new electrode, get a gel-filled one. And go for one with a silver/silver chloride reference instead of a mercury one -- especially if you are using it on food or other samples that may be consumed. Another consideration about calomel electrodes: they take hours to recover from relatively small temperature changes. Ag/AgCl references aren't as sluggish.
Finally, take care when storing the electrode. It should be stored under humid conditions to keep it from drying out. The best way is to put a small piece of cotton or glass wool soaked with distilled or deionized water inside the plastic end cap. For shorter-term storage, e.g., overnight, you could immerse the tip in pH 7 buffer.

Fisher Science &... | Answered on Nov 22, 2017


you need the software for that microscope from the manufacturers web site suitable for win 8 64 bit

Science &... | Answered on Nov 20, 2017


It sounds like a fuel vapor lock, check that the fuel line to the carb is not coming contact with any metal surfaces of the engine for this will boil the fuel in the line before it enters the carb. If this is the case, just stand the fuel line off from where it is touching. I hope this helps....GOD BLESS....Randy...

Mercury Marine... | Answered on Nov 07, 2017


What model? Could be the battery need to be changed.

at
http://www.tobaccogeneral.com/accur8-355-mnf.htm
tobacco is selling out their accura8

American Weigh... | Answered on Oct 29, 2017


This link should provide you the manual as a pdf file

http://digiblue.com/customer-service/downloads/qsg/DigiBlue_QX5_QSG.pdf

Digital Blue QX5... | Answered on Oct 17, 2017


You probably have done this, but......try a new and top line USB cable. rj

Fisher... | Answered on Sep 29, 2017


Note: Administrator default password is admin.

Science &... | Answered on Sep 27, 2017


Here are the instruction for installing the QX3 (or QX3+) Microscope with Vista and Windows 7. You must be using a 32-BIT VERSION. The QX3 is not compatible with 64-bit versions.

Note, DO NOT use the software from the CD that came with the microscope.
DO NOT plug in the QX3 microscope until Step 4.

Step 1. Download and install the QX3PLUS.EXE software from Intel:
http://tinyurl.com/QX3-Win7-Files

Step 2. Download and install the QCODINSTL.EXE software from:
http://tinyurl.com/QX3-Win7-Files

Step 3. Download and extract the QX3 Drivers from:
http://tinyurl.com/QX3-Win7-Files

Step 4. Now, plug in the microscope.
When the "Found New Hardware" wizard appears you will see a message saying that the driver installation was not successful. Click the Close box. You need to install the driver manually by following these steps:
a. Click START - Select Devices & Printers
b. Right-click on the Intel QX3 Icon and select Properties
c. Click the Hardware tab - click Properties
d. Click Update Driver - select "Browse my computer for driver software"
e. Browse to the folder with the extracted QX3 drivers from Step 3. above. The driver software should install successfully.

Before you run the QX3Plus program right click the icon, click on "Properties", click the "Compatibility" tab, check the box next to "Run this program in compatibility mode for:", then choose in the drop-down box "Windows 98 / Windows ME". You should also check "Run as Administrator" if your account is a "Standard user".

Step 5. Now double-click on the QX3+ icon on the desktop and the program should run.
------------

Intel Play QX3... | Answered on Sep 16, 2017


Damage to an expensive precision instrument can result in loss of functions, distorted results, costly repair or replacement. There is also risk of contamination and injury. Damage can result from misuse or lack of maintenance.

Safety Maintenance

http://www.wpro.who.int/mvp/lab_quality/2096_oms_gmp_sop_12.pdf

Science &... | Answered on Sep 09, 2017

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