AlcoDigital AL7000 Digital Breathalyser Alcohol Tester

The latest model AlcoDigital AL7000 breathalyser is an accurate and reliable digital breathalyser. This portable, handheld breathalyser alcohol tester comes in a hard storage case and gives you a clear reading in mg/L, the same unit used for UK breath alcohol limits. When the sensor is due, you swap in a new pre-calibrated one yourself. There's no need to send the breathalyser away for recalibration.

It's our best-selling personal breathalyser and an ideal breathalyser for clinics, hostels, schools, nightclubs and personal use. It's popular with colleges and employers too.

Key features of the AL7000 digital breathalyser

• Mg/litre display showing readings to three decimal places (0.000)
• Prism replaceable sensor module that's user replaceable and factory calibrated. Just swap and go, with no recalibration service needed
• Easy to use with single button operation, audible alerts and a clear digital display
• Comprehensive starter pack with hard case, 5 breathalyser mouthpieces, batteries and in-car power cable
• Sleek, compact breathalyser design that's robust and reliable
• 12 month warranty (UK based) and UK based customer support
• Free UK delivery by Royal Mail 24 Tracked

Who is the AL7000 breathalyser alcohol tester for?

• Personal use: regular checks at home, including the morning after drinking, for peace of mind before driving
• Clinics and hostels: everyday alcohol screening with a reading you can record
• Schools, colleges and nightclubs: simple alcohol screening checks with a fresh mouthpiece for each person
• Employers: a second check after a front-line screen. Our workplace alcohol screening kit includes the AL7000

The reliable and user-friendly AL7000 digital breathalyser combines precision, convenience and cost-effectiveness. It's a valuable tool for responsible alcohol consumption monitoring and ongoing alcohol testing.

What does an AL7000 breathalyser mg/L reading mean?

This premium EU model of the AL7000 alcohol breath tester is designed for accurate measurement of breath alcohol content (BrAC). It displays readings in milligrams per litre (mg/L), aligning with UK and European standards, so you can compare your reading directly with these limits. The alcohol level in your breath reflects your blood alcohol concentration (BAC), which is why limits are often quoted both ways:

• 0.350 mg/L: drivers in England, Wales and Northern Ireland
• 0.250 mg/L: most drivers in France
• 0.220 mg/L: drivers in Scotland and the Republic of Ireland
• 0.090 mg/L (about 0.02% BAC): pilots, cabin crew and air traffic controllers. Many employers also use this level for workplace HSE screening in safety-critical roles

There is no single legal alcohol limit for UK workplaces, and the HSE doesn't set one. Employers set their own in their drug and alcohol policy. Many countries also set lower limits for new or professional drivers. See our guide to drink-drive limits by country.

In 2026 the Government consulted on lowering the England and Wales limit to match Scotland's. At the time of writing, the limits above still apply.

How to use the AL7000 digital breathalyser

1. Wait at least 20 minutes after drinking, eating, smoking or using mouthwash.
2. Fit a clean mouthpiece and press the power button.
3. Wait for the breathalyser to warm up.
4. Blow steadily through the mouthpiece until you hear two beeps.
5. Read your test result. It stays on the display for about 15 seconds, then the breathalyser turns itself off.

Keep the breathalyser out of extreme temperatures, so avoid leaving it in your car's glove box, and let it reach room temperature before testing.

How to change the AL7000 breathalyser sensor

All breathalyser sensors wear out with use, and this is where the AL7000 saves you time and money. It has an easy to change breathalyser sensor design. With the breathalyser turned off, snap out the old AL7000 sensor module and snap in a new AL7000 replacement sensor. It comes factory calibrated, so it's ready to use straight away.

Replace the sensor every 12 months or 300 tests, whichever comes first, so more frequently with regular use. The AL7000 breathalyzer indicates to the user when to change the breathalyser sensor. It also has a built-in test counter, so you can check how many tests you've done.

Semiconductor or fuel cell breathalyser: which do you need?

The AL7000's advanced sensor technology is a premium semiconductor sensor, which is reliable for screening at a lower price than a fuel cell. If you test very often or want the most accurate personal reading, choose the AlcoDigital Platinum fuel cell breathalyser. For workplace results that need to stand up to scrutiny, choose a Dräger breathalyser. Still not sure? Read our breathalyser FAQ.

AL7000 breathalyser starter pack contents

• AL7000 breathalyser with sensor and 2 x AA batteries fitted
• 5 breathalyser mouthpieces
• Hard storage case
• Wrist strap
• 12V DC power cable for your car charger socket
• AL7000 breathalyser user manual

Spare breathalyser sensors and breathalyser mouthpieces are readily available.

AL7000 digital breathalyser technical specifications

• Display: digital, in mg/L BrAC
• Measuring range: 0.000 to 2.000 mg/L
• Accuracy: ±0.01% BAC at 0.05% BAC
• Sensor: user replaceable, pre-calibrated oxide semiconductor sensor module
• Self-diagnostic system: diagnostic with sensor self-checking, active flow rate sensor, battery indicator and test counter
• Warm-up time: less than 1 minute
• Response time: result within seconds
• Power supply: 2 x AA alkaline batteries, or 12V DC in-car power cable
• Dimensions: 105mm x 50mm x 18mm
• Weight: approximately 98g
• Certs: CE, FDA, RoHS and DOT

AL7000 breathalyser safety notice

This product is a screening device only and does not provide legally evidential results. Alcohol affects individuals differently and readings may vary due to metabolism, timing and other factors. Being under the limit does not mean you're safe to drive. If in doubt, do not drive.

AL7000 digital breathalyser frequently asked questions

Q: How accurate is the AL7000 digital breathalyser?
A: It's accurate to ±0.01% BAC at 0.05% BAC, which is roughly ±0.04 mg/L at a reading of 0.220 mg/L. That's reliable for personal and workplace screening, but a reading close to a limit could be either side of it. It is not intended to replace an evidential police breathalyser or blood test.

Q: Do I ever need to send the AL7000 breathalyser away for calibration?
A: No. When the sensor is due, simply fit a new pre-calibrated sensor yourself.

Q: How long should I wait after drinking before testing with the AL7000 breathalyser?
A: Wait at least 20 minutes after drinking, eating, smoking or using mouthwash, so that alcohol left in your mouth doesn't affect the reading.

Q: Will the AL7000 breathalyser detect alcohol the morning after?
A: Yes, if there is still enough alcohol in your system. After a heavy night you can still be over the limit the next morning, even if you feel fine.

Q: Can I use the AL7000 breathalyser reading to decide if I can drive?
A: Use it only as a guide. Our advice is not to drink and drive at all. If you're unsure whether you are over the legal limit, do not drive.

Q: What causes errors like 'Flow' or 'Bat' on the AL7000 breathalyser?

• Flow means you didn't blow long or hard enough. Try again, blowing steadily until you hear two beeps
• Bat means the batteries are low

Q: Who is this AL7000 digital breathalyser suitable for?
A: Anyone who wants to check their breath alcohol level at home, and employers, schools, clinics and hostels carrying out simple alcohol screening.

Q: Can multiple people use the AL7000 breathalyser?
A: Yes. Simply change the mouthpiece between users for hygiene. For workplace or healthcare testing, choose professional one-way mouthpieces.