Testo 420 – Differential Pressure Measuring Instrument

Testo - 2 Year Warranty

All of our brands are covered by an Australian warranty, so if you have any manufacturing faults, defects or issue, we have you covered.

Standard Limited Warranty for 24-months on mechanical or manufacturer defects. Please note, this does not include wearing of parts or accessories. Unless otherwise stated.

For a detailed overview of our warranty terms and procedures, please click here

Advanced Tools - Lifetime Support

From the moment you make a purchase with us, you become a valued member of the Advanced Tools family. Our dedicated support team is at your service, ready to assist with any inquiries, concerns, or issues you may encounter over the lifetime of your product. Whether you need help with setup, troubleshooting, updates, or simply want to understand your product better, we are here for you.

7 Days a week Customer Service

Our customer Support is open 7 Days a week! Ensuring you will always have someone to speak with.

Expert Assistance

Our support team includes professionals with extensive knowledge and experience, ready to provide you with accurate and helpful solutions & Support.

Online Store

Our online store runs 24/7, ensuring you can purchase anything you may need, at any given time!

By ordering from this store you accept the terms below:

Free Shipping and Exclusions

• Free shipping applies to most orders over $250 AUD.
• Free shipping excludes:
  • Bulky/oversized items (e.g., Inova air purifiers, IBC tanks)
  • Dangerous goods
  • Certain products delivered to regional addresses
• If free shipping does not apply, we will contact you as quickly as possible with the reason and the proposed shipping cost; you will not be charged until you confirm that you wish to proceed with the order.

Hazardous/Dangerous Goods

• Dangerous goods incur an additional handling fee to meet Australian freight safety regulations. This fee ensures that your items are shipped safely and in compliance with national standards.
• The following products are not eligible for free shipping and incur a flat shipping rate of $42 (inc GST):
  • Viper Brite Alkaline Coil Cleaner & Brightener 3.78L RT300G
  • Viper Aerosol Degreaser Coil Cleaner RT375A
  • Viper Heavy Duty RT390G
  • Viper Ice Machine Cleaner Nickel Safe 461ml RT500N & RT500G
  • Viper Venom Pack Pure Concentrate Brightener Cleaner RT310V
• For limits on shipping dangerous goods by air and road, please consult Australia Post.

Special-Order Items

• HIKMICRO products are special-order items imported internationally.
• Free shipping over $250 still applies; however, expect approximately 2 weeks lead time.
• We will notify you before you complete the purchase.

Shipping Costs, Transit & Handling

• Orders over $250 AUD: Free shipping where eligible.
• Orders under $250 AUD: Flat rate $29 (inc GST) (insurance excluded), unless the item falls under bulky/remote or hazardous profiles, in which case we will quote the actual cost.
• Handling time: 1–4 business days (Mon–Fri).
• Transit time: typically 2–5 business days (Mon–Fri).
• Order cut-off: 4:00 PM ACST. Orders placed after this time are processed the next business day.
• We dispatch from multiple depots; dispatch times vary by product and location.

Order Confirmation, Tracking & Carriers

• You should receive an order confirmation email within 5 minutes of ordering (check spam/junk if not received).
• When your order ships, we will email the carrier and tracking number.

Address Changes, Cancellations & Backorders

• Address changes: We cannot change an address once an order is in transit, so please contact us as quickly as possible at sales@advancedtools.com.au or call (03) 9001 6399 if you need to change the address.
• Cancellations: Allowed at any time before dispatch. If already dispatched, follow our refund policy.
• Backorders: If an item is out of stock, we will contact you with an estimated delivery time. You will not be charged until you confirm that you wish to proceed with the order.

Damaged or Missing Parcels

• If a parcel is visibly damaged, reject it from the courier and contact customer service.
• If received damaged without opportunity to reject, email photos to sales@advancedtools.com.au and lodge a return claim via our Returns page.
• For lost or missing parcels, contact customer service for next steps.

International Shipping

• We do not offer international shipping from this store.