Eureka Manta Manual Page 64 of 67
10 What is the different between the Amco Clear turbidly standard and StablCal?
Amoco Clear is made of polymer beads while StablCal is a formazin compound. Most people want
their turbidity measurements referenced to formazin, and so use formazin or StablCal for calibrations.
The polymer beads are cheaper and more stable, BUT you must know the equivalent formazin value
for any polymer bead standard. You cannot rely on what’s written on the polymer-bead label; you
must check it with your own instrument after it has been calibrated with formazin or StablCal. (D.13)
11 How do I cal BG algae?
There are several ways to calibrate fluorometers. Please read Standardizing Eureka’s Turner
Fluorometers and please read Calibrating Eureka’s Turner Fluorometers; they can be found on the
Eureka Web site or the Eureka Flash Drive. (D.14)
12 What is a good SRF?
Generally, and SRF between 80 and 120 is good, and 60 to 140 is acceptable. It your SRF is outside
those limits, you should check your standard value and the maintenance condition of your sensor.
(D.5)
13 How often should I change the pH electrolyte?
To be safe, change your electrolyte every month or so. That’s probably overkill, but changing
electrolyte takes only a minute and is basically free. (D.10)
14 Where do I buy calibration solutions for the various sensors?
You can buy most cal solutions from Eureka, lab supply companies, or most catalog houses (such as
Cole Parmer). (D.2, D.3)
G4 Communication and Software
1 What is the range of the Bluetooth?
Hard to say because of the differences in Bluetooth technology over the years, variations in Data
Display Bluetooth implementations, and because Bluetooth is different for Android and Apple
applications. You can estimate Bluetooth range of your Bluetooth by connecting your Manta to your
Bluetooth Battery, pairing with a Data Display, and then walking away with the Data Display until the
connection breaks. (F.3, F.4)
2 How long does the Bluetooth Battery take to charge?
We recommend charging overnight, but you can get a partial charge in an hour or two. (F.3)
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