Question 1

What are directions for testing calibration of milwakee ph 600 aq meter

Accepted Answer

Purchase a solution of known pH and use that to calibrate. Choose a pH test solution that has a pH close to the one you will be using your meter for.

Question 2

On arrival the probe had crystalized salt or battery acid all over.  It seems to work...should I be concerned?

Accepted Answer

NO! As the instruction sheet specifically states, "Do not be alarmed if white crystals appear around the cap. This is normal with pH electrodes and they dissolve when rinsed with water."

Read those instructions carefully. This is a pretty simple pH meter (manual one-point calibration, NON-replaceable probe, et cetera) - but you'll still need to rinse the probe off after each use, and to store it (preferably upright) with "a few drops" of storage solution in the cap (NOT distilled water!), with the cap securely installed, when not in use. Use, rinse, shake (once or twice - it's not a can of paint, lol), and place cap back on after ensuring that there's some storage solution in there. Once initially hydrated, you really don't want the glass probe to dry out inside (there are very tiny holes in it, which is how it works). That's the purpose of putting some storage solution in the cap, by the way. Plain (tap) water won't work, and distilled water will actually leach the substance out of the probe that's needed for proper function (so, again, don't use distilled water). At the end of the day, this is a disposable device, because it doesn't have a replaceable probe. How long it lasts before it's time to dispose of the thing and buy something else depends on whether it is used *and stored* properly.

Question 3

How do I know the manufacturing date of my ph probe since they only last a few months

Accepted Answer

Most people start selling on Amazon since it is supposed to be a relatively easy way to flip items for cash. But once you start coming across all sorts of acronyms you have never heard of or don’t fully understand, the game starts to seem more challenging. As an Amazon seller, you have most likely come across these three terms:

SKU – Stands for Stock Keeping Unit and is a generic industry term used in warehouses in order to identify a unique product. All Amazon products need an SKU which either you or Amazon can choose. SKUs are meant to help sellers keep track of their merchandise
    ASIN – Stands for Amazon Stock Identifier Number which is is a unique code every product you send into Amazon’s warehouse will need. You can customize this but in the event that you do not choose your ASIN, Amazon will assign you an arbitrary code. This is essentially ‘Amazon’s SKU’ and is meant to help Amazon keep track of merchandise.   
    EAN – Stands for a European Article Number and normally consists of 12-13 digits. This is basically a barcode which identifies each individual product, its manufacturer and other item characteristics. This code is typically already printed on the label or packaging by the manufacturer.

Question 4

can I use this for dissolved oxygen

Accepted Answer

This is a pH tester

ASIN	B005H78ZI0
Best Sellers Rank	#222,305 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #197 in Lab pH Meters
Brand Name	Milwaukee Instruments
Color	Black
Compatible Devices	Containers or vessels holding substances for testing
Customer Reviews	3.8 3.8 out of 5 stars (473)
Global Trade Identification Number	00810666001606
Included Components	battery
Item Dimensions	6 x 1.2 x 0.95 inches
Item Weight	2.85 ounces
Manufacturer	Milwaukee Instruments
Measurement Type	pH
Minimum Operating Voltage	1.5 volts
Model	PH600AQ
Number of Items	1
Part Number	pH600-Box
Power Source	Battery Powered
Specification Met	+-0.2 Ph
UPC	810666001606
Unit Count	10 Count
Upper Temperature Rating	50 °C
Warranty Description	30 Days

Milwaukee Instruments pH 600 pH Tester With 1 Point Manual Calibration

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