Name: AUSTRALIAN SCIENTIFIC pH 4.0 Calibration Solution 500ml
Brand: AUSTRALIAN SCIENTIFIC
SKU: 83513
Price: 29.90 AUD
Availability: InStock
Rating: 4.8 (4 reviews)

Product Details

AUSTRALIAN SCIENTIFIC pH 4.0 Calibration Solution 500ml

Acidic pH Buffer for Accurate pH Meter Calibration 🧪📏

AUSTRALIAN SCIENTIFIC pH 4.0 Calibration Solution 500ml is an acidic buffer used for calibrating pH meters to ensure precise measurement of acidic solutions such as hydroponic nutrient mixes.

AUSTRALIAN SCIENTIFIC calibration fluids are the official buffers used with APERA INSTRUMENTS water control tools, including the PH60 and PC60 pocket pH testers.

These buffers are standardised at 25°C, colour coded for easy recognition, and electrometrically checked against standard primary buffer solutions in accordance with NIST using traceable reagents.

Regular calibration helps ensure your pH meter provides reliable readings when testing hydroponic nutrient solutions.

Key Features ⚗️💧

🧪 pH 4.0 acidic calibration buffer
📦 500ml bottle
📏 Designed for low-range (acidic) pH calibration
🔬 Suitable for 2-point or 3-point pH meter calibration
🌡️ Standardised at 25°C
🎨 Colour coded for easy identification
✔️ Compatible with APERA INSTRUMENTS PH60 and PC60 pocket testers
📜 NIST traceable reagents

Why Use pH 4.0 Calibration Buffer? 🌿

The pH 4.0 buffer is used for acidic calibration, ensuring that pH meters measure low-range solutions accurately.

For hydroponic growers, using pH 7.0 followed by pH 4.0 calibration helps ensure reliable readings when monitoring nutrient reservoirs and plant feed solutions.

Consistent calibration ensures the readings of hydroponic nutrient solutions remain trustworthy.

Directions for Use 🧪

Prepare the Electrode
Rinse the probe with distilled or deionised water and gently blot dry using a lint-free tissue. Do not rub the glass bulb.
Prepare the Buffer
Pour a small amount of AUSTRALIAN SCIENTIFIC pH 4.0 Calibration Solution into a clean container. Never insert the probe directly into the bottle.
Immerse the Probe
Place the electrode into the solution and gently stir to remove any air bubbles.
Allow Reading to Stabilise
Wait for the reading to stabilise before confirming calibration.
Adjust the Meter
Set the meter to pH 4.0 (or 4.01 depending on the meter specification).
Rinse the Probe
Remove the probe and rinse thoroughly with distilled water.
Discard Used Solution
Always discard the used buffer and never return it to the bottle.

Important Usage Tips 📌

🌡️ Temperature: Calibration solutions are temperature dependent. For best accuracy use at 25°C.
📏 Calibration order: For best results perform two-point calibration (e.g., pH 7 then pH 4).
🧴 Storage: Keep the bottle tightly sealed and store in a cool, dark place.
🚫 Avoid contamination: Never reuse calibration solution or return used liquid to the bottle.

SHIPPING

*All orders are dispatched in unmarked boxes to maintain your privacy.*

DISPATCH AND DELIVERY

Orders are shipped via Australia Post or shipping platform Big Post. Orders are generally dispatched on Tuesday, Wednesday and Friday. Please allow for additional delivery time for remote areas. If you require express delivery, please contact our sales representatives at 03 9555 6667 or email grow@agradehydroponics.com to obtain a quote.

Couriers will attempt delivery to the specified address. If no one is home to receive the delivery, the couriers will leave your parcel somewhere safe. If there is no safe place, re-delivery or collection will be offered by the carrier.

Due to the increasing frequency of online fraud and theft, we are unable to ship to P.O. Boxes and Parcel Lockers.

SHIPPING COSTS

All freight charges are calculated on weight, dimensions and location. We are committed to keeping shipping charges at a minimum and do not charge handling fees.

Please note: Freight costs are subject to change. Regional areas, large and bulky orders, and tail-lift delivery occasionally incur an additional levy. Should shipping costs need to be amended it will be to reflect the actual charges, and not incur additional ‘shipping and handling’ fees. We will notify you if this rare situation occurs.

A-Grade Hydroponics reserves the right to cancel the order if shipping costs become prohibitive and customers will be issued a full refund.

PAYMENT

All payments must be cleared before dispatch. Payments can be made online via PayPal, AfterPay, PayID or Electronic Funds Transfer. Payments can also be accepted via credit card by phoning 03 9555 6667.

Please allow at least 24 hours for payments to clear.

FULFILMENT OF ORDERS

You will be notified immediately if an item is permanently unavailable, with options for a replacement item at equal or higher value, refund or store credit.

All refunds will clear within 3-5 business days. Store Credits will be issued as an electronic Gift Card to be used online or in-store.

DANGEROUS AND PROHIBITED GOODS

These goods are available for in-store collection only.

Overall rating: 4.75 / 5 from 4 reviews.

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4

"Better value than buying from bluelab"

— Joshua (5/5)

Thankyou for the product and

"Thankyou for the product and the good advice l received from you very helpful !!"

— Alan F. (5/5)

Ph4

"Does as it should.. works well to keep you ph pen calibrated"

— Michael T. (4/5)

Works every time

"Works every time"

— Leanne D. (5/5)

AUSTRALIAN SCIENTIFIC pH 4.0 Calibration Solution 500ml

A-GRADE HQ

Pickup available at A-Grade HQ

A-GRADE HQ

AUSTRALIAN SCIENTIFIC pH 4.0 Calibration Solution 500ml

Acidic pH Buffer for Accurate pH Meter Calibration 🧪📏

Key Features ⚗️💧

Why Use pH 4.0 Calibration Buffer? 🌿

Directions for Use 🧪

Important Usage Tips 📌

DISPATCH AND DELIVERY

SHIPPING COSTS

PAYMENT

FULFILMENT OF ORDERS

DANGEROUS AND PROHIBITED GOODS

AI Generated Review Summary

Summary topics

Review highlights

Reviews

4

Thankyou for the product and

Ph4

Works every time

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Company

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