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Standards - Super Savings! Save up to 40%


Super Savings! Up to 40% off on Standards at Dupen Labs. Top brands include Innovating Science, Electron Microscopy Sciences, Cepham Life Sciences, Sanco Industries, Froggys Fog, CQ Concept Inc., Hach Company, Essential Depot, & RPI. Hurry! Limited time offers. Offers valid only while supplies last.



Portable Ammonium Nitrogen Concentration Water Testing Kit - Materials for 40 Tests
Portable Ammonium Nitrogen Concentration Water Testing Kit - Materials for 40 Tests
By Innovating Science
In Stock
$48.15
$35.00
You Save: 27%

mpn: IS9754, ean: 0724832097549,

4.4 out of 5 stars with 145 reviews
Ammonium nitrogen content in water is important to keep an eye on. High concentrations can be dangerous to aquatic wildlife and, in extreme cases, make water unsafe to drink. This kit has been designed to allow the analyst to perform a very simple colorimetric analysis to determine the ammonia nitrogen concentration of their fresh water sample. The analysis yields an easily identifiable color transition that can be compared with the included color key to determine the concentration in your


pH 4.01 & 7.01 Buffer Solutions, 2x230 ml, 230ml 2/PK
pH 4.01 & 7.01 Buffer Solutions, 2x230 ml, 230ml 2/PK
By Electron Microscopy Sciences
In Stock
$24.00

mpn: 70697,

4.1 out of 5 stars with 50 reviews
For use with Piccolo Plus Ph MeterPiccolo, Plus, pH, Meter.


Portable Water Alkalinity Testing Kit - Materials for 40 Tests
Portable Water Alkalinity Testing Kit - Materials for 40 Tests
By Innovating Science
In Stock
$50.12
$35.00
You Save: 30%

mpn: IS9752, ean: 0724832097525,

4.1 out of 5 stars with 140 reviews
The alkalinity of a body of water indicates its susceptibility to changes in pH. When a strong acid or base is introduced to the system, a body with a low alkalinity will see its pH change dramatically, while a high alkalinity body’s pH will change very little. This kit has been designed to allow the analyst to perform a very simple titration to determine the alkalinity of their fresh water sample. This kit allows the analyst to determine both the phenolphthalein as well as the total


Bovine Serum Albumin (BSA) Standard [2mg/ml] - 2 x 5 ml
Bovine Serum Albumin (BSA) Standard [2mg/ml] - 2 x 5 ml
By Cepham Life Sciences
In Stock
$48.00

mpn: 10481,

4.6 out of 5 stars with 78 reviews
Bovine Serum Albumin BSA, is a universally known protein standard utilized in different protein assays for standard curves. To ensure accurate results, it is prepared with extra care for reproducible results..


Innovating Science -Water Hardness Testing Kit  IS9751
Innovating Science -Water Hardness Testing Kit IS9751
By Innovating Science
In Stock
$53.93
$42.00
You Save: 22%

mpn: IS9751, ean: 0724832097518,

4.6 out of 5 stars with 68 reviews
This kit has been designed to allow the analyst to perform a very simple titration to determine the hardness of their fresh water sample. Water hardness is a measure of minerals such as calcium, magnesium, and iron being carried by the water in solution. These minerals can precipitate out of the water carrying them and form deposits, leading to problems such as scaling in industrial equipment. The titration uses an easily identifiable color transition to indicate the end of the analysis. The


Propylene Glycol - USP Certified Food Grade - Highest Purity, Humectant, Fog Machine, Humidor & Antifreeze Solution, DIY, Kosher- 4 Gallon Value Pack
Propylene Glycol - USP Certified Food Grade - Highest Purity, Humectant, Fog Machine, Humidor & Antifreeze Solution, DIY, Kosher- 4 Gallon Value Pack
By Sanco Industries
In Stock
$107.99

mpn: 88881, ean: 0768980888819,

4.4 out of 5 stars with 21 reviews
Propylene Glycol is an ingredient used to make many homemade items, some of which include soap, humidor solution, detergent, moisturizer, shampoo, massage oil, lotion, cigar juice for humidors, and RV antifreeze. Other uses include cigar juice for humidors and RV antifreeze. This product is food grade, kosher, USP, colorless and virtually odorless. Propylene Glycol is a syrupy lubricant that is smooth to the touch. One quart, minimum 99.7% pure. Store in a well ventilated, cool, dry area.  


Propylene Glycol - Food Grade USP - 5 Gallon Pail
Propylene Glycol - Food Grade USP - 5 Gallon Pail
By Froggys Fog
In Stock
$129.99

mpn: CHEM-PG-5G, ean: 0839226023605,

4.2 out of 5 stars with 17 reviews
Propylene Glycol 55 Gallon Drum - USP - Food Grade Safety Sealed HDPE Resealable Lid Finest Quality Propylene Glycol for use as moisturizer in medicines, cosmetics, food, toothpaste, shampoo, mouth wash and hair care. Uses: Antifreeze Solutions, Solvent for fats, oils, waxes, resins. Hygroscopic agent. Coolant in refrigeration systems, plasticizers, hydraulic fluids, textile conditioners Propylene glycol can be used for the following: As an emulsification agent in Angostura and orange bitters;


Ethylene Glycol (Technical Grade) (5 Gallon)
Ethylene Glycol (Technical Grade) (5 Gallon)
By CQ Concept Inc.
In Stock
$149.99

mpn: R-671,

4.2 out of 5 stars with 12 reviews
Ethylene Glycol, Technical Grade. 99% Non-Inhibited.Technical Grade. 99.1% min. Assay. Non-Inhibited. No Rust Inhibitors Added.


Hach 2659405 StablCal Turbidity Standards Calibration Kit, 2100P Portable Turbidimeter, Sealed Vials
Hach 2659405 StablCal Turbidity Standards Calibration Kit, 2100P Portable Turbidimeter, Sealed Vials
By Hach Company
In Stock
$202.92
$191.00
You Save: 6%

mpn: 2659405,

4.6 out of 5 stars with 14 reviews
StablCal Calibration Standards Kit, for 2100P Portable Turbidimeter. USEPA accepted for calibration purposes. StablCal Stabilized Formazin Turbidity Standards are true Formazin dilutions developed for use in any turbidimeter.Kit includes Sealed Vials of each: . Precise, Pre-mixed Formazin Solutions. Based on Formazin Primary Standards. Enhanced Stability Saves Time and Labor. Confidence in results.


glyCUBE - 4 Gallons Propylene Glycol.
glyCUBE - 4 Gallons Propylene Glycol.
By Essential Depot
In Stock
$142.39
$85.43
You Save: 40%

mpn: CUBE-4PG, ean: 0812841026756,

4.4 out of 5 stars with 47 reviews
glyCUBE - 4 Gallons Propylene Glycol. Poly-bagged and doubled boxed. 4 x 1 Gallon Pure Propylene Glycol- USP - Kosher - Food Grade - Safety Sealed HDPE Resealable Lid. Finest Quality Propylene Glycol for as a moisturizer in medicines, cosmetics, food, toothpaste, shampoo, mouth wash, hair care. Kosher certified and suitable for food and cosmetic use. 4 Gallons in a 12'' x 12'' x 12'' box that you can stack 4 high conserving, space in your facility. Many customers order 20 or 30 Glycubes at a


Spermidine Free Base, 25 Grams
Spermidine Free Base, 25 Grams
By RPI
In Stock
$297.99

mpn: S92150-25.0,

4.1 out of 5 stars with 9 reviews
CAS Number: 124-20-9 Molecular Formula: C7H19N3 Molecular Weight: 145.25 g/molProduct is sold for research or further manufacturing use only, not for food or drug use.. Chemical Formula: C7H19N3. CAS Number: 124-20-9. Molecular Weight: 145.25 g/mol. Common Name: Spermidine Trihydrochloride.


Hach 2635300 SpecCheck Secondary Gel Standards Set, DPD Chlorine - LR
Hach 2635300 SpecCheck Secondary Gel Standards Set, DPD Chlorine - LR
By Hach Company
In Stock
$198.23
$182.00
You Save: 8%

mpn: 2635300,

4.3 out of 5 stars with 41 reviews
Ready-to-use SpecCheck Secondary Standards Kits include four 10-mL (1-inch) sealed glass cells with a blank and three different standards within the typical testing range, instructions, plastic case and Certificate of Analysis. SpecCheck Standards are computer-formulated and have a two-year shelf life from date of manufacture.Use with Hach Colorimeters and Spectrophotometers. Solid Gel Standards- No preparation required. Ideal for instrument verification in the lab and in the field. 2-year


RPI Spermidine Free Base, 5 Grams, 99% Purity, for Molecular Biology
RPI Spermidine Free Base, 5 Grams, 99% Purity, for Molecular Biology
By RPI
In Stock
$93.99

mpn: S92150-5.0,

4.0 out of 5 stars with 15 reviews
Spermidine has a wide range of applications in research laboratories. RPI spermidine is a high-quality biochemical, with a purity greater than 99% as determined by gas chromatography. Common uses range from electroporation to buffer preparation to nucleic acid treatment. It is also commonly used for in-vitro molecular biology applications. Product Details: Harmonized Code: 38220019 Storage Temperature: Room Temperature Appearance: Low melting solid to colorless liquid Moisture (KF): ≤ 0.7 %


RPI Sodium Chloride Powder, ACS Grade, 10 Kilograms, Buffer and Cell Culture Media Component
RPI Sodium Chloride Powder, ACS Grade, 10 Kilograms, Buffer and Cell Culture Media Component
By RPI
In Stock
$124.99

mpn: S23025-10000.0,

4.5 out of 5 stars with 21 reviews
Sodium chloride is a common buffer component used in the preparation of TBS, PBS, cell lysis buffers, immunoprecipitation wash buffers, and other buffers. It is also used as a component for cell media, including LB (Luria) broths). Specifications: Appearance: White Powder Assay (Titration): 99.0 - 101.5 % Barium: Pass Bromides: ≤ 0.01 % Calcium (Ca): ≤ 0.002 % Chlorate and Nitrate (as NO3): ≤ 0.003 % Heavy Metals : ≤ 5 ppm Insoluble Matter: ≤ 0.005 % Iodide (I) : ≤ 0.002 % Iron:


Hach 2971205 StablCal Turbidity Standards Calibration Kit, 2100Q Portable Turbidimeter, Sealed Vials
Hach 2971205 StablCal Turbidity Standards Calibration Kit, 2100Q Portable Turbidimeter, Sealed Vials
By Hach Company
In Stock
$207.62
$196.00
You Save: 6%

mpn: 2971205,

4.4 out of 5 stars with 18 reviews
Exclusive algorithm in the Rapidly Settling Turbidity mode provides accurate, repeatable measurements for rapidly settling, difficult-to-measure samples while eliminating the need for redundant measurements and estimatingEasy Calibration and Verification. Simple Data Transfer. Accurate for Rapidly Settling Samples. Convenient Data Logging. Optical System for Precision in the Field.



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