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Bluelab MONGUA Guardian Monitor for pH, Temperature, and Conductivity (TDS) Measurements in Water with Easy Calibration, 3 in 1 Digital Nutrient Meter for Hydroponic System and Indoor Plant Grow White
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- Monitor pH up and down, temperature, nutrient (TDS) level in water to maximize your grow and ensure plants get a balanced feed; General uses includes growing tent and reservoir; Selectable conductivity units include TDS, EC, ppm 500, ppm 700 and CF
- This hydroponics tester has ATC that provides consistent reading regardless of any fluctuations in temperature; High and low alarm when outside parameters, selectable units include TDS, EC, ppm 500, ppm 700 and CF
- Lab quality glass pH probe with easy two point calibration; Conductivity / temperature probe comes factory calibrated so it's ready to be used; Double junction probe is more accurate than test strips and drops
- Combine with Bluelab pen and meter for full garden nutrients monitoring in water and soil; Other features: International power supply, water resistant design; KIT INCLUDES: Calibration solution, EC probe and pH probe, probe care kit is sold separately
- Made in New Zealand and manufactured by Bluelab, the industry leader in hydroponic testing equipment, built for growers; 2-Year Limited Warranty with proof of purchase (6-month warranty for pH probe)
Customer ratings by feature
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From the manufacturer
Bluelab Guardian Monitor provides 24/7 continuous monitoring of your key parameters
The simplest and most effective reservoir monitor you could ever own
Key features include:
- Plant-safe green LED displays
- Simple push-button pH calibration system
- No calibration required for conductivity and temperature
- Water-resistant design
Customisable measurement scales for extra convenience
For utmost convenience, you'll be able to customise your Bluelab Guardian Monitor with your preferred measurement scales. Not only will the Guardian Monitor measure pH, but you can also select from EC, CF, PPM 500 (TDS) and PPM 700 for conductivity or from °C and °F for temperature.
Monitors pH, conductivity and temperature
Silent flashing high and low alarms
To start monitoring your reservoir, set your preferred ranges for pH, conductivity and temperature on your Bluelab Guardian Monitor. If the solution moves away from the ideal range, the display will alert you; just remember to set high and low alarms for your parameters. With one glance, you'll be able to check on the status of your reservoir.
New Zealand-made quality, built for growers
Our products are designed and built with growers, for growers - and our Bluelab Guardian Monitor is renowned as the simplest and most effective reservoir monitor. The Bluelab Guardian Monitor was designed and built in New Zealand.
Tried and trusted by growers like you
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Easy calibration for pHGet rid of the headache of pH calibration with our simple two-point calibration process. Remember to calibrate your monitor's pH probe before first use. You do not need to calibrate for conductivity or temperature. |
Automatic temperature compensation for accurate readingsDesigned for indoor use, the Guardian Monitor can be mounted on a wall or hung on a support bar. Set up your reservoir and place the pH and conductivity probes in the solution. Our probes are fully temperature compensated, which means you'll be getting accurate readings every single time. |
Superior design and manufacturingAll Bluelab products are proudly designed and manufactured in New Zealand. Our rigorous production process includes each monitor being inspected by hand before it finds its way to you! |
The Bluelab promiseThe Bluelab Guardian Monitor comes with reputable support. This means that you can have complete peace of mind when you invest in the Bluelab Guardian Monitor. |
pH Pen | Conductivity Pen | Grower's Toolbox | Combo Meter | Soil pH Pen | Pro Controller | |
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Customer Reviews |
4.4 out of 5 stars
4,484
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4.6 out of 5 stars
1,039
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4.4 out of 5 stars
1,139
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4.4 out of 5 stars
944
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4.2 out of 5 stars
952
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Accuracy | 0.1 pH, 1°C/2°F | 0.1 EC, 1 CF, 50 PPM (PPM 500 TDS), 70 PPM (PPM 700), 1°C/2°F | Bluelab pH Pen: 0.1 pH, 1°C/2°F; Bluelab Conductivity Pen: 0.1 EC, 1 CF, 50 PPM (PPM 500 TDS), 70 PPM (PPM 700), 1°C/2°F | 0.1 pH, 0.1 EC, 1 CF, 50 PPM (PPM 500 TDS), 70 PPM (PPM 700), 1°C/2°F | 0.1 pH, 1°C/2°F | 0.1 pH, 0.1 EC, 1 CF, 50 PPM (PPM 500 TDS), 70 PPM (PPM 700), 1°C/2°F |
Parameters measured | pH, temperature | Conductivity/EC, temperature | pH, conductivity/EC, temperature | pH, conductivity/EC, temperature | pH, temperature | pH, conductivity/EC, temperature |
Replaceable probe | ✓ | ✓ | ||||
Backlit screen | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Power supply | 1 x AAA alkaline battery | 1 x AAA alkaline battery | 1 x AAA alkaline battery per pen | 2 x AAA alkaline batteries | 1 x AAA alkaline battery | Input: 100-240 Vac, 50-60 Hz, 5 VA, 4 interchangeable plug types (USA, Euro, UK, NZ/AUS) Output: 24VDC 0.4amp |
Popular for | Hydroponic nutrient availability measuring in solution | Hydroponic nutrient density measuring | Hydroponic nutrient solution measuring starter kit | Powerful handheld nutrient solution measuring with probes capable of sitting in reservoir | Hydroponic nutrient availability measuring in media | Wall-mounted nutrient solution monitoring for medium to large reservoirs with alarm parameters and automated dosing (pumps sold separately |
Bluelab: Trusted by growers like you for over 30 years
For over 30 years, Bluelab has been providing award-winning and innovative technology that helps growers unlock their plants' full potential. At Bluelab, we believe that our commitment to designing hardy, purpose-built products and creating strong educational programs will help elevate the standard of growing. Together with our growers, we will create a world with fewer pesticides, food miles and less water usage. Let Bluelab’s products take your growing to the next level.
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Honest Review- Bluelab MONGUA Guardian Monitor for TDS
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Bluelab Guardian Monitor
Bluelab Corporation Limited
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Product information
Product Dimensions | 7.6 x 4.92 x 1.57 inches |
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Item Weight | 7.7 ounces |
Manufacturer | Bluelab Corporation Limited - Import (NZ) |
ASIN | B0081K32B0 |
Item model number | BLU27100 |
Batteries | 2 AAA batteries required. |
Customer Reviews |
4.4 out of 5 stars |
Best Sellers Rank | #160,834 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #233 in Lab pH Meters |
Is Discontinued By Manufacturer | No |
Warranty & Support
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Product Description
n just one glance it clearly conveys all 3 critical parameters for successful growth: pH, conductivity AND temperature.
The Bluelab Guardian Monitor is a constant indicator of the desired levels of EC/ppm 700/TDS/CF, pH and temperature, enabling the grower to optimise these parameters as the crop progresses through each growing phase.
The Bluelab Guardian Monitor is mains powered and is mounted to the wall or hung on a support and the probes simply placed into the reservoir.
With the Bluelab Guardian Monitor monitoring your crops 24 hours a day and with the ability to set high and low alarms, a flashing display lets you know if one parameter moves away from the ideal, allowing you to make the required adjustments quickly and effectively.
Features
• Large easy to read displays
• No calibration required for conductivity and temperature
• Simple push button pH calibration
• Selectable values for conductivity and temperature
• Flashing high and low alarms
• Temperature compensation
• Greater tolerance to RF/electronic interference provided
• International power supply
• Replaceable double junction pH probe
• Adjustable display brightness
• Non-volatile memory
Probe Tips
All probes are interchangeable between all Bluelab productsProper hydration of ph probes is vital to maintain wick
All pH probes eventually need to be replaced—they can only house so much reference solution
KCl storage solution is required for optimum probe maintenance
RO water will reduce probe life
WARNING:
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the quality and ease of use of the product. They mention it's a great meter and makes keeping solution easy to manage. That said, opinions are mixed on value, accuracy, and performance.
AI-generated from the text of customer reviews
Customers like the quality of the product. They say it's an excellent meter, and the best on the market for constant display. Some say it is a perfect tool, and a sweet unit for a nutrient reservoir.
"This is such a sweet unit for a nutrient reservoir. Now i can just peek in and see that everything is perfect...." Read more
"This Bluelab Guardian Monitor is excellent. Everything was packaged well. pH probe had sufficient storage solution in it. Easy installation...." Read more
"...Same with ppm. Great device, when you can swing it - get it. Will not disappoint." Read more
"Item don’t work, came in a torn up box, was def used not brand new. The Ph pen was busted and had blue liquid in that’s it’s not suppose to have...." Read more
Customers find the product easy to use. They say it makes keeping their solution easy to manage, and convenient to be able to check both at once. Customers also say it's easy to set up and accurate, and takes the hassle out of monitoring their system. They also say that it saves a ton of time.
"...hydroponics, especially DWC this product is a must very easy to set up through YouTube and works just like it says it does very happy I have this" Read more
"...I had been testing both manually daily. It is so much easier and more convenient to be able to check both at a glance...." Read more
"Guardian it is! Calibrate once a month and it keeps me dialed it at a glance, no more pens and samples.Update...." Read more
"...are a tad bit pricier than some but they work great and are very easy to calibrate...." Read more
Customers are satisfied with the appearance of the outdoor living product. They mention that it looks good, is well designed, and has a nice, easily visible green light display.
"...Now i can just peek in and see that everything is perfect. Nice, easily visible, green light display...." Read more
"...stays calibrated very accurate runs on both 120 and 240 sturdy and well designed Would buy again for surehighly recomended over pens" Read more
"Works great and looks fancy to!" Read more
"looks good" Read more
Customers are mixed about the performance of the meter. Some mention it works very well, is accurate, and easy to use, while others say it only worked for a short while and stopped functioning properly. Some customers also say it does not do a good job maintaining a proper PH level.
"Item don’t work, came in a torn up box, was def used not brand new. The Ph pen was busted and had blue liquid in that’s it’s not suppose to have...." Read more
"...They are a tad bit pricier than some but they work great and are very easy to calibrate...." Read more
"...My take is that the probe is no good. It hasn't been six months yet, and I need this now. I didn't think I would have this problem." Read more
"...Use induction.. and gavita pro 1000s ...and turn out was amazing due to guardian bluelab bc was able to check everything as nutes added and is..." Read more
Customers are mixed about the accuracy of the product. Some mention that it's super accurate and easy to use, while others say that it doesn't calibrate, does not include calibration solution, and gives inaccurate readings.
"...The plants are telling me the readings are plenty accurate. This upgrade is worth every penny." Read more
"...with the calibration solution for the ph, but it did not include the EC calibration solution which is supposed to be included...." Read more
"This is easy to set up and accurate. This is the one you want to buy and should buy." Read more
"The probe has been in use for 1.5 months and now it won't calibrate. Cheapo pens last longer" Read more
Customers are mixed about the value of the outdoor living product. Some mention it's worth the price, while others say it'd be better off with a handheld device.
"...This upgrade is worth every penny." Read more
"...It was somewhat expensive for monitoring a single tower, but I have no regrets given how much time I save in manual testing." Read more
"...The handheld ones are certainly cheaper and it might make justifiying this guy hard...." Read more
"Love this thing its defiantly worth the money, Only thing is I wish I got the upgrade to Wifi. But it was almost $ 150.00 more...." Read more
Customers are disappointed with the missing pieces of the outdoor living set.
"...First time I recieved a used unit that was missing some parts, but after contacting hydrofarm they replaced the item very fast without any hassle...." Read more
"Missing parts..." Read more
"Missing parts..." Read more
"Missing parts..." Read more
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Top reviews
Top reviews from the United States
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Update. Few months later the ppm failed and had to Ship back for repair at my cost. This started off well but now I'm thinking it's just not made well. I have a ppm pen that's been working for 10 years and it came with a water filter lol, no reason a $300 unit can't last.
One thing to note though - mine came with the calibration solution for the ph, but it did not include the EC calibration solution which is supposed to be included. Had to take a star away for that since now I need to spend more money just to calibrate the thing.
Top reviews from other countries
Have not used the product yet but will update if anything goes wrong.