Misuratore di pH impermeabile Extech PH90

Name: Misuratore di pH impermeabile Extech PH90
Brand: Extech
SKU: 0793950150900
Price: 140.04 EUR
Availability: InStock

Brand:Extech

3.5/5

€
140.04

Il PH90 è un robusto alloggiamento impermeabile (IP57) con elettrodo a superficie piatta per misurare il pH in liquidi, semisolidi e solidi. Non si rompe né intasa le giunzioni come i tradizionali elettrodi a bulbo di vetro. Il sensore facile da sostituire è perfetto per l'uso sul campo o in laboratorio. Completo di elettrodo pH a superficie piatta, cappuccio protettivo del sensore e due batterie a bottone CR-2032 da 3 V.

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EAN: 0793950150900

Categories: Prodotti industriali e scientifici, Testare, misurare e ispezionare, Strumentazione per l'analisi delle sostanze, Test del pH, Misuratori di pH,

Data Hold, Min/Max, Spegnimento automatico e indicazione di batteria scarica. Compensazione automatica della temperatura. PTS (percentuale di pendenza) indica quando è il momento di sostituire l'elettrodo (sotto il 70% o sopra il 130%). La calibrazione a 2 o 3 punti riconosce automaticamente le soluzioni tampone (ordinare i tamponi pH separatamente). Visualizzazione simultanea di pH e temperatura.

Batteries	‎2 Lithium Metal batteries required.
Batteries Included?	‎Yes
Batteries Required?	‎Yes
Battery Cell Type	‎Alkaline
Country of Origin	‎China
Customer Reviews	4.4 4.4 out of 5 stars 24 ratings 4.4 out of 5 stars
Included Components	‎Complete with flat surface pH electrode, protective sensor cap, and two 3V CR-2032 button batteries
Is Discontinued By Manufacturer	‎No
Item model number	‎PH90
Item Package Quantity	‎1
Item Weight	‎2.88 ounces
Manufacturer	‎Extech
Measurement System	‎Metric
Number Of Pieces	‎1
Part Number	‎PH90
Product Dimensions	‎6.7 x 1.4 x 1.4 inches
Style	‎PH90

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Scritto da: Thomas B. Gross

A ton of fun

I'm very excited by my new-found ability to measure the PH of all kinds of things. My primary interest in this device was originally for testing the PH of my lawn soil, which I have always suspected is just not right (based on how much difficulty I have growing grass). So I first mixed some dirt with water to measure its acidity - it does appear to be alkaline. Just for fun I also measured the acidity of cider vinegar (guess what: its PH is very low) as well as tap water, tap water with baking soda, and then cider with baking soda (which, I discovered, is how you can make a volcano). All great fun and really neat, I think. The instructions that come with the device are a bit obtuse, or at least I found them confusing. Basically you keep the probe in a cap with a moist piece of sponge, and then you put the probe in different solutions (or, I think directly in dirt, for example). I have been going wild measuring the acidity of all kinds of things, from cottage cheese to single malt scotch. I am attaching some photos of my preliminary research.

Scritto da: JB

Works pretty well, temperature is slow to equilibirate

Seems to work pretty well. It has held its calibration well. It takes a while for its temperature to equilibrate with whatever you are measuring, and the pH reading does change noticeably as the temperature changes in most cases, so I find that it takes a minute or so to get a reading (unless it's already equilibrated, in which case a measurement only takes a few seconds).

Scritto da: Richard C. Drew

Very easy to use, obvious superior quality, simple calibration. No backlight, thin display cover and difficult to find parts.

We have around 3/4 of an acre around out house with lots of planting areas and a man-made Koi pond. We test the water in the pond weekly, and test the soil when planting new plants. For the pond it's been one of the cheap bulb sensors, and a test strip for the soil. This meter works on liquids, semi-solids and solids - that means I can test the pond and the soil with a single meter - no more test strips. The display is easy to read and calibration is quick and simple. I do have a couple of complaints - the display is not backlit. Since the display is set back about 1/4" from the housing, it can be difficult to read outside or in bright light - not because the display is dim, but because of the shadow cast by the housing. You have to change the angle a few times to read the numbers in bright sun. Easy enough to see if you change the angle of the meter a little, but worth mentioning. Next is that the sensor can be replaced - great idea - but after 30 minutes of searching the web and the manufacturers site, there's none to be found. It's in their catalog (Part PH95) but nowhere else. There are other replacement modules for other pH meters that cost between $50 and $65. If that's the price for the PH95 it seems expensive. The instructions do mention that the module will have to be replaced eventually. The meter uses two 2032 button batteries - included. These are probably the most common button batteries available and a pair costs around $5. There's no case or pouch for the meter, so you can't just toss it in your test kit or tool box. The display lens and button covers are a single piece of flexible plastic. My finger-nail was able to but a permanent crease in the lens without much effort - I would be able to puncture it with a good press. The entire meter is really heavy duty - except for the lens and buttons. Drop the meter from a few feet and it will shrug it off. If any part of the face hits a rock, edge of the pond, etc. you'll probably break the meter. It's like a windshield on a tank. Accuracy and ease of use, a solid 5 stars. Overall build quality, 4 stars. Display: Lack of backlight, deep off-set from the face, and really thin "lens", three stars.

Scritto da: Mr. Sixx

Waterproof pH meter for liquids or solids

I garden a lot, and also have indoor house plants. I have had my soil tested before by sending samples out to a lab. So a pH meter that I can use to directly measure soil pH sounds appealing. Plants generally have an 'ideal' pH range they can grow in, so it pays to test and modify your soil pH if you want the best plant growth. For example, blueberries, dogwood, azaleas and rhododendrons all like acidic soil. Okra, asparagus, dianthus, purple crocus, clematis, potentilla and lilacs like neutral to alkaline soil. So I tested my house plants soil for a Ti plant, a ficus and some Christmas cactus. The soils generally were between 5.2 and 6.2 pH -- quite acidic. I don't change the soil very often and I have not flushed the soil outdoors with a lot of water lately either, so it's possible the soil is that acidic. But I am still wondering if I should calibrate this meter first before relying on the measurements... although a buffer solution is not included. I did try just testing our tap water, which I think is pretty neutral, and it did read around 6.8. A couple other thoughts... the probe will need to be changed eventually depending on how much it's used. There is a 'slope' reading on the meter that will tell you when it needs to be changed. I assume a new probe would not be cheap. The LCD display can be hard to read because there is no backlight. Other than that, I am excited to test my garden soil in the Spring and help my plants thrive.

Scritto da: Berit Borrmann

Sehr wertvoll

Super Teil schnelle Leferung funktioniert seht gut und schnell. WSürde ich wieder kaufen, bei bedarf.