$75 - $100, Apera Instruments

801 Magnetic Stirrer by Apera

Apera Instruments 801 Magnetic Stirrer is a reliable yet affordable choice for laboratory mixers. Comes with magnetic stirring bars with a speed range of 0-2300 rpm. Working diameter: ø120 mm. Maximum stirring volume: 3000 ml (0.8 gallons). Powered by DC9V power adaptor. The stirrer meets ISO 9001:2008 standards and comes with a 2-year warranty.

• Highly cost-effective choice of a reliable Magnetic Stirrer
• 3000 ml (0.8 gallons) stirring capacity
• Meets International Organization for Standardization (ISO) 9001:2008 standards
• 2-year Warranty

AI1112 pH/Cond. Calibration Solution Kit (pH 7.00, 4.00, 10.01), (1413μS, 12.88mS, 84μS) 8oz/bottle+storage solution 4oz+CalPod by Apera

The Apera Instruments AI1112 pH/EC Calibration Buffer Solution Kit includes three 8oz bottles of pH buffer solutions (pH 4.00, pH 7.00, and pH 10.01), three 8oz bottles of conductivity (EC) standard calibration solutions (1413 μS/cm, 12.88 mS/cm, 84 μS/cm), one 4oz bottle of 3M KCL storage solution for pH/ORP electrodes, plus one piece of Apera's unique CalBox, which helps users to organize all the solutions in one place and create no more mess in the calibration process.

All the buffer solutions are standardized against NIST certified references at 25°C (77°F). It's ideal for the calibration of all kinds of pH/conductivity meters. Since pH and conductivity value are affected by temperature, the temperature & pH/conductivity reference charts are provided on the bottle labels for reference. The 3M KCL Storage Solution helps keep the sensitivity and accuracy of your pH probes.

All the solutions are double-sealed, not subject to the DOT shipping restrictions. The expiration date is printed on the bottle. 2-year shelf life for the pH buffers, 1-year for the conductivity solutions.

Note: Store at room temperature and away from direct sunlight. Keep the bottle tightly closed when not in use. Keep out of reach of children.

• Standardized against NIST certified references at 25°C (77°F), ideal for the calibration of all types of conductivity meters
• Double-sealed, 2-year shelf life for the pH buffers; 1-year for the conductivity solutions.
• The expiration date and Temperature/pH reference chart provided for reference
• The 3M KCL Storage Solution helps keep the sensitivity and accuracy of your pH probes
• CalPod included for easy organization of solutions and streamlining calibration process

AI1223 SX620 pH Pen Tester Kit (±0.01 pH) by Apera

• The smallest pH pen with a reliable testing performance for regular liquid e.g. pools, hydroponics, aquaculture, cooling towers, beverage making, body fluid, etc
• ±0.01 pH accuracy; Automatic 3-point calibration; 0-60°C Automatic Temp. Compensation
• A slim replaceable probe, suitable for test tubes
• Intelligent functions: switch from °F to °C, automatic power-off, pH probe invalidation reminder (remind you to replace the probe for better performance)
• Complete kit: 3 types of premixed calibration solutions (4, 7, 10) and storage solution (3M KCL) all in one portable case

AI1309 2401T-F Conductivity Electrode (k=1,ATC/RCA connector) by Apera

Apera Instruments 2401T-F Conductivity Electrode (K=1.0) is designed for high-accuracy laboratory conductivity measurements. Its cavity structure and platinum chip sensor design enhance the accuracy and stability of conductivity measurement in the range of 0 to 200mS/cm. The glass body is resistant to all kinds of general chemical corrosion.

• Designed for high-accuracy laboratory conductivity measurement
• The cavity structure and platinum chip sensor design enhances the measuring stability and accuracy
• Built-in temperature sensor
• The glass body is resistant to chemical corrosion.
• BNC/RCA connector, compatible with Apera EC800, EC820, PC800, PC820, EC910, PC910, EC950, PC950, EC9500, PC9500

AI235 5052 Compact Saltwater Salinity Pen by Apera

The Apera 5052 Saltwater Salinity Tester is designed for easy and reliable salinity measurements for aquariums, aquaculture, and environmental monitoring. Apera's unique platinum-coated sensor with automatic temperature compensation (ATC) ensures accuracy and precision of the measuring results in a wide range –an accuracy of ±1.5% of full range in 0 to 100 ppt (=100,000 ppm).

The dip-and-test is the easiest way to get reliable saltwater salinity readings (vs. hydrometers and refractometers). Sampling test is not required. Simply dip the meter into saltwater and get stable readings in 10 seconds. No need for rinsing between each test.

Say goodbye to frequent calibration. Calibrating the meter once every month will give you reliable results. The calibration solution is included in the kit.

The meter is designed with a single-button operation powered by 2*AAA batteries. Auto. Power-off and low-battery reminder functions are available.

Comes with a complete kit including the 5052 tester, 2 AAA Alkaline batteries, 50 MS/cm calibration solution, and a carrying case. 2-year warranty with the instrument and 6-month warranty with the sensor.

Note: The Apera 5052 tester measures practical salinity (NOT absolute salinity) converted from conductivity using The Practical Salinity Scale 1978 (PSS-78) and is standardized against the Normal Standard Seawater (S=35), which is accurately calibrated in conductivity ratio (K15). The PSS-78 is recommended by all oceanographic organizations as the scale in which to report salinity data.

• Dip and test - the easiest way to get reliable saltwater salinity readings (range: 0-100 ppt; accuracy:1.5% of full range)
• Apera's unique platinum-coated sensor with automatic temperature compensation (32 to 140°F) ensures accuracy and precision
• Standardized against the normal standard seawater (s = 35), accurately calibrated in conductivity ratio (K15) and in salinity
• Designed for saltwater aquariums, fish farms, and environmental monitoring
• Single-button easy operation. Calibration is only needed once a month

AI4206 TN500-S2 AMCO 0.0NTU Standard Calibration Solution 100ml by Apera

• 0 NTU turbidity solution refill for Apera Instruments Turbidity Meters
• AMCO Clear° is an EPA approved primary standard for calibration of turbidity sensors that is safe, non-toxic and disposable. It is easy-to-use with no dilution or resuspension, and it is available in a wide range of values.

301Pt-S ORP Electrode (platninum pin, 8-pin connector) by Apera

The Apera Instruments 301Pt-S Combination ORP Electrode/Tester/Sensor is equipped with a high-quality platinum ORP sensor and gel KCL electrolyte (no need for refill), suitable for regular water solutions testing and wastewater treatment.

With the 8-pin connector, the electrode is compatible with Apera's PH400, PC400, PH400S, PC400S meters. This electrode has a 6-Month limited warranty fulfilled by Apera Instruments, LLC.

• Equpped with high-Quality Platinum ORP sensor
• Gel KCL electrolyte adopted; No need for refilling.
• 8-pin connector
• 6-Month Warranty fulfilled by Apera Instruments

601 Powerful Magnetic Lab Stirrer/Stir Plate with Electrode Holder by Apera

The Apera Instruments 601 Magnetic Stirrer features a reliable design and a powerful stirring ability. It comes with two magnetic stir bars (25mm and 30mm) and an electrode holder. The speed range is 0-2300 rpm. Working diameter: ø120 mm. Maximum stirring volume: 3000 ml (0.8 gallons). Powered by DC9V power adaptor. Ideal for laboratory use. Not suitable for highly viscous solutions. Glass beakers and electrodes are not included.

• An economical choice of a RELIABLE & DURABLE magnetic stirrer with an electrode holder
• STABLE & POWERFUL stirring ability with a Max. 3000ml stirring capacity
• Smooth speed control (0-2300 rpm)
• Durable structure design
• 2-YEAR Warranty, CE Certified

LabSen 331 POM-body pH Electrode for Wastewater Treatment by Apera

Backed by proprietary Swiss sensor technology and materials, the LabSen® 331 POM Combination pH Electrode is designed for testing wastewater, emulsion, suspension, and samples containing protein and sulfide.

LabSen unique blue hemispherical glass membrane - faster response time, better repeatability, and built tough, highly resistant to general impact (totally differentiates from the traditional fragile glass bulb membrane).

Polymer Electrolyte - The solid polymer electrolyte is in direct contact with test samples. The anti-pressure capacity can reach up to 6 bars, making it ideal for testing suspension and wastewater. No more frustrating clogged junctions.

Long-Life Reference System - The LabSen 331 pH electrode adopts a long-life reference system, which is composed of a glass tube, AgCl, and a reference silver wire. The top end of the slim glass tube is stuffed with cotton, which prevents the reaction between AgCl and electrolyte when the temperature changes. It improves the stability of reference electrode and extends the service life of the electrode.

The electrode uses a BNC connector, compatible with any pH meters that use BNC connectors, such as Apera Instruments MP511, PH850, PH8500, PH700, PH910, PH950, PH820 and PC820. The temperature sensor is not built-in. Users need to have a separate temperature probe (ex: Apera Instruments MP500) to enable ATC or manually input temperature to realize temperature compensation.

The electrode is backed up with a 6-month warranty by Apera Instruments.

• Proprietary pH sensor technology and materials from Switzerland
• Unique LabSen® blue glass membrane, faster response rate, better repeatability, and impact-resistant
• Polymer Electrolyte, ideal for testing wastewater and suspension. No more clogged junction
• Long-Life Reference System, improving the stability of reference electrode and prolong the service life of the electrode
• POM housing, highly resistant to corrosions

PC60-DE Spare pH/Conductivity/Temp. Electrode (double-junction, gel inner solution) by Apera

The Apera Instruments PC60-E is the replacement probe for PC60-Z Smart Multi-Parameter Tester, also compatible with PC60 pocket pH/Conductivity Tester. Its dual sensor allows you to measure pH, conductivity, TDS, salinity, resistivity, and temperature at the same time. This probe features Apera's unique Brush-Resistant Platinum Black (BPB) Sensor, ensuring accurate Conductivity measurement in a wide range for general water solutions.

• Replacement probe for PC60-Z Multi-parameter Smart Pocket Tester, also compatible with PC60.
• Measures pH, conductivity, TDS, salinity, resistivity, and temperature simultaneously for regular water solutions.
• Double-Junction pH probe, suitable for dirty and complex solutions and extends service life by up to 80%.
• The unique blue glass bulb will never generate any air bubbles, making reliable pH tests easier than ever.
• Brush-Resistant Platinum Black (BPB) Sensor ensures accurate conductivity measurement in a wide range for general water solutions.

PC60-E Replacement Probe for PC60 Pocket pH/Conductivity Tester by Apera

The Apera Instruments PC60-E probe probe is the replacement probe for PC60 pocket pH/Conductivity tester. Its dual sensor allows you to measure pH, Conductivity, TDS, Salinity and Temperature at the same time effortlessly. This probe features Apera's unique Brush-Resistant Platinum Black (BPB) Sensor, ensuring accurate Conductivity measurement in a wide range (0.1 μs to 20.00 MS). Works great for common aqueous solution and waste water treatment. CE-Certified and comes with a 6-Month Warranty.

• pH Measuring Range: -2.00 - 16.00 pH; Conductivity (EC) range: 0.1 μs to 20.00 MS; tds range: 0.1 ppm - 10.00 ppt; Salinity Range: 0 - 10.00 ppt
• Measures pH, Conductivity and Temperature simultaneously
• Unique Brush-Resistant Platinum Black (BPB) Sensor ensures accurate conductivity measurement in a wide range (0.1 μs to 20.00 MS)
• Suitable for common aqueous solution, pure water and waste water's conductivity testing

SX610 pH Pen Tester, Suitable for Test Tube pH Testing by Apera

The Apera Instruments SX610 pH Pen Tester is featured with reliable measuring performance with a single-button operation in a slim body. A cost-effective choice for your regular pH testing, including hydroponics, water treatment, education, pools & spas, and so on. The pH probe is replaceable and suitable for test tube measurements, which is especially good for educational use.

Easy Auto Calibration (1 point: 7.00 pH) with buffer recognition and 0 to 60°C Auto Temperature Compensation (ATC), ±0.1 pH/1.0°C accuracy with 0 to 14.0 pH measuring range. Intelligent functions: switch from °F to °C, automatic power-off, low battery alarm, pH probe invalidation reminder (remind you to replace the probe for better performance).

The meter comes with a complete kit of premixed calibration solutions (7.00 pH), storage solutions (3M KCL), CR2032 lithium batteries all in a portable carrying case. IP57 waterproof and dustproof floats on water, so you don't have to worry if it falls into the water by accident.

CE-Certified with a 2 year warranty for the meter and 6-months for the probe.

• Easy SINGLE-Button Operation, Smallest Pen-Style design with replaceable probe (good for test tube measurements)
• AUTO Calibration with auto buffer recognition; Auto Temperature Compensation (ATC) ensures accuracy in variant temperatures (0-60°C)
• COMPLETE KIT with READY-TO-USE calibration solution, KCl storage solution, and batteries in a portable carrying case
• Intelligent functions: temperature unit switch from F to C, automatic power-off, low battery alarm, and pH probe invalidation reminder
• AUTO RECOGNITION and REMINDER of stable values improves consistency, saving you the trouble of guessing when to manually hold measurement