How often does this pH meter need to be re-calibrated and/or how can I tell when it needs to be re-calibrated?

The manufacturer recommends keeping the device probe in a neutral storage solution; the protective tip case/container actually has a 'fill' line for guidance, and it is designed to hold a liquid safely when stored as indicated -- If someone uses distilled or deionized water by itself as a storage solution, the salts contained in the probe tip will dissipate and the probe will then need to be replaced--about $25, plus a fine headache trying to get it right. If you are out of storage solution keeping the probe wet somehow is better than dry--but don't store without the specialized solution for more than a day or so; these are typically $10-$13 for 100ml - 250ml size bottles on Amazon.

Can anyone confirm if this comes pre calibrated?

Mine was, the PH20 unit. Dead on, but I still did the cal to know how. If you use it for pH 8.0 or lower, the 4.00 and 7.00 solutions are perfect-no need for 10.00 test buffer solution. I am AMAZED at how bad my cheapy meters are, and how they disagree with each other and this one.

Can this be used to analyze urine?

Yes, it can tests urine with no problem. You can use the probe cap as a container for the urine.

I will be using this meter once a month. Do I need storage solution for the probe?

Storing the probe in the storage solution helps keep the probe's sensitivity and accuracy. So it's a recommended practice. While storing the probe without any solution will not damage the probe, it's just going to cause the probe to lose its sensitivity and accuracy temporarily. Store the probe in the storage solution again for about 10 minutes, the sensitivity and accuracy can be restored.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Apera Instruments AI209 PH20 Digital pH Meter Pocket Tester Kit

Product ID: 48808217

Details

Age range (description)
Adult
Brand
Apera
Colour
Green
Display type
Digital
Included components
Meter pH 4 and
Outer material
Plastic or

⚡0.1 pH accuracy

💧Waterproof design

🔋2000 hours battery life

R3231

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

Description

📊 Elevate your water testing game with precision and ease — don’t get left behind!

ALL IN ONE READY KIT - Comes complete with batteries, calibration solutions, lanyard, and a sleek carrying case for on-the-go testing.
EFFORTLESS CALIBRATION - Auto buffer recognition and 3-point calibration with included solutions—no guesswork needed.
BUILT FOR ANY ENVIRONMENT - Waterproof and rugged design lets you measure confidently indoors or outdoors.
SMART STABILITY DETECTION - Auto recognition of stable values means you never have to second-guess your measurements.
PRECISION THAT PROFESSIONALS TRUST - Ultra-accurate 0.1 pH resolution ensures lab-grade readings every time.

The Apera Instruments AI209 PH20 is a professional-grade pocket pH tester offering 0.1 accuracy across a full 0-14 pH range. Featuring waterproof construction, auto temperature compensation, and smart calibration with buffer recognition, it delivers reliable, stable readings in just 5 seconds. Powered by AAA batteries with up to 2000 hours of use, this complete kit includes everything needed for precise pH monitoring in hydroponics, aquariums, pools, and water treatment.

Specifications

ASIN	B01ENFOHN8
Age Range Description	Adult
Battery Life	2000 Hours
Best Sellers Rank	84,464 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 2 in pH Meters
Brand	Apera Instruments
Colour	Green
Customer Reviews	4.3 4.3 out of 5 stars (8,699)
Display Type	Digital
Global Trade Identification Number	00858718006339
Immersion Depth	1E+1 Centimetres
Included Components	Meter, solutions pH 4 and pH 7, 4 AAA batteries, lanyard, carrying case
Indoor Outdoor Usage	Outdoor
Item Length	218 Millimetres
Item Weight	3.9 Ounces
Lower Temperature Rating	32 Degrees Fahrenheit
Manufacturer	Apera Instruments
Manufacturer Part Number	AI209
Model Name	PH20
Model Number	AI209
Number of Batteries	4 AAA batteries required. (included)
Outer Material	Plastic or Silicone
Power Source	Battery Powered
Product Care Instructions	Wipe Clean
Product Warranty	2-year manufacturer warranty
Resolution	0.1 degree
Response Time	5 seconds
Reusability	Reusable
Special Features	LCD Screen
Specification Met	CE, ISO 9001
Style Name	single
UPC	858718006339
Unit Count	1.0 count
Upper Temperature Rating	50 Degrees Celsius

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

R3231

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

View all Trustpilot reviews