Labcon Tip Top™ Dispenser Caps

• Convenient and Easy: Just tilt the tube and squeeze Tip Top® slightly to dispense one drop onto a slide.
• Safe Dispensing: You don't need to open the tube preventing spillage and exposure to infectious agents.
• Very Low Evaporation: A flexible cap is available to cover the Tip Top® so you can store samples longer.
• Medical Grade Resins: USP Class medical grade resins and packaging.

Safe Dispensing of Blood Samples
 
Tip Top® Dispenser Caps A safe and cost-effective way of dispensing samples in your lab. The Tip Top® is a disposable cone shaped cap that fits all standard 13 or 16 mm blood collection tubes. A small opening allows you to dispense a sample without removing the Tip Top cap so you can prepare smears on slides or dispense into reagent wells or microcentrifuge tubes safely. Inside the tip of the Tip Top® is an integral porous filter that removes fibrin from the blood sample allowing for a perfect smear.

Tip Top® is a convenient alternative to pipetting from an open blood tube, just tilt the tube and squeeze to dispense one drop. And Tip Top® is safe you don't need to open the tube and pipet out of the tube so spillage is reduced along with potential exposure to infectious disease. Just carefully remove the stopper and replace with Tip Top®.

The Tip Top® dispenser cap can be used with almost any liquid. Made from chemically resistant polyethylene they can dispense serum, reagents, plasma, whole blood and CSF. The integral porous polyethylene filter efficiently separates serum and can also be used a a reagent blender.

Fits standard 13 x 100 and 16 x 100 collection tubes.

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PR1MA™ EDTA 0.5M Solution pH 8.0

• CAS Number: 6381-92-6; 1310-73-2; 7732-18-5
• Solubility: Water
• Storage Temperature: Room Temperature
• Shipping Weight: 0.3 lbs
• Shipping Dimensions: 3.38 x 4.63 x 3.38

Research or further manufacturing use only, not for food or drug use.

• Appearance: Clear and Colorless Solution
• pH: 7.90 - 8.10
• Sterile: Pass   

PR1MA™  Sodium Phosphate Dibasic, Anhydrous

CAS Number: 7558-79-4
Molecular Weight: 142.0
Chemical Formula: Na₂HPO₄
Solubility: Water
Storage Temp: Room Temperature

Research or further manufacturing use only, not for food or drug use.

• Appearance: White Crystal
• Assay: ≥ 99.0 %
• Chloride (Cl): ≤ 0.002 %
• Heavy Metals : ≤ 10 ppm
• Insoluble Matter: ≤ 0.01 %
• Iron: ≤ 0.002 %
• Loss on Drying: ≤ 0.2 %
• pH (5% Solution): 8.7 - 9.3
• Sulfate: ≤ 0.005 %
• Aerobic Plate Count: ≤ 1000 CFU/g
• Yeast and Mold : ≤ 100 cfu/g
• Total Coliforms: Negative

• Appearance: White, greyish-white or yellowish-white, fine, crystalline powder or fine crystals, needles or elongated plates
• Identification: Pass
• Melting Point: 149 - 153 ^oC
• pH: 4.5 - 7.5
• Specific Optical Rotation: +17.0 - +20.0^o
• Chloride: ≤ 0.01 %
• Related Substances: ≤ 0.50 %
• Loss on Drying: ≤ 0.50 %
• Sulfated Ash: ≤ 0.10 %
• Assay (Dried Basis): 98.0 - 102.0 %
• Non Animal Origin: Non Animal Origin
• Grade: USP
• Country of Origin: Report

CAS Number: 66-81-9
Molecular Weight: 281.35
Chemical Formula: C₁₅H₂₃NO₄
Solubility: Ethanol, methanol
Storage Temp: 2-8°C

Antifungal antibiotic that inhibits protein synthesis in eukaryotes. Blocks translation of mRNA on the ribosome derived from Streptomyces griseus.

WARNING! This product can expose you to Cycloheximide, a chemical which is known to the State of California to cause developmental harm. For more information go to www.P65Warnings.ca.gov.

Research or further manufacturing use only, not for food or drug use.

• Appearance: White to Off White Crystalline Powder
• HPLC (Purity): ≥ 96.0 %
• Identification (HPLC): Conforms
• Melting Point: 102 - 120 ^oC
• Potency: ≥ 950 µg/mg
• Solubility: Soluble In Chloroform; Ethanol, Methanol
• Water Content: < 0.3 %

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PR1MA™ Acrylamide/bis-Acrylamide, 19:1 Ratio Solution

CAS Number: 79-06-1; 110-26-9; 7732-18-5
Storage Temp: 2-8°C

A 40% solution containing 38% (w/v) Acrylamide and 2% (w/v) bis-Acrylamide for a monomer to crosslinker ratio of 19:1.

WARNING! This product can expose you to Acrylamide, a chemical which is known to the State of California to cause cancer, developmental and reproductive harm. For more information go to www.P65Warnings.ca.gov.

Research or further manufacturing use only, not for food or drug use.

• Appearance: Clear, colorless liquid
• Conductivity of Solution: ≤ 10 µmhos
• DNase/ RNase: Not Detected
• Electrophoresis: Pass Test
• pH: Report

PR1MA™ Sodium Citrate, Trisodium Salt, Dihydrate, [Citric Acid, Trisodium Dihydrate]

Common Name: Citric Acid, Trisodium Dihydrate
CAS Number: 6132-04-3
Molecular Weight: 294.1
Chemical Formula: C₆H₅Na₃O₇  2H₂O
Solubility: Water
Storage Temp: Room Temperature

Research or further manufacturing use only, not for food or drug use.

• Appearance: White crystalline powder
• Assay: ≥ 99.0 %
• pH (5% Solution): 7.0 - 9.0
• Alkalinity: Pass Test
• Chloride: ≤ 50 ppm
• Heavy Metals : ≤ 10 ppm
• Identification Tests: Passes Tests
• Loss on Drying: 10.0 - 13.0 %
• Sulfate : ≤ 150 ppm
• Tertrate: Meets USP Test
• Grade: Meets current USP Specifications

Looking for replacement tubes? Check out PR1MA™ Microcentrifuge Tubes here! 

• High centrifuging to 20,000 x G
• Freezable (-80°C)
• Autoclavable
• Capacity: 1.5 mL
• ATP, RNase/DNase and Endotoxin Free (non-pyrogenic)
• Attached flat snap caps

SuperSlik® low retention microcentrifuge tubes have a low protein binding surface that minimizes sample loss during sample manipulation.  Ideal for applications such as mass spectrometry (ms), immunoprecipitation (IP), co-immunoprecipitation (Co-IP).  Leakproof snap caps may be penetrated by a syringe and will no pop open during autoclaving.  Compatible with many thermal cyclers and able to tolerate centrifuge speeds up to 20,000 RCF.

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• Appearance: Yellow Crystalline Powder
• Crystallinity: Pass
• Identification: Pass
• Loss on Drying: ≤ 2.0 %
• pH (1% Solution in Water)@ 25°C: 2.3 - 3.3
• Potency: ≥ 900 µg/mg
• Specific Rotation: -250 - -235°

PR1MA™ HEPPS [N-(2-Hydroxyethyl)piperazine-N'-(3-propane sulfonic acid)] [EPPS]

Common Name: HEPPS [N-(2-Hydroxyethyl)piperazine-N'-(3-propane sulfonic acid)] [EPPS]
CAS Number: 16052-06-5
Molecular Weight: 252.3
Chemical Formula: C₉H₂₀N₂O₄S
Solubility: Water
Storage Temp: Room Temperature

Research or further manufacturing use only, not for food or drug use.

• Appearance: White Crystalline Powder
• Assay (Titration, dried basis): ≥ 99.0 %
• Loss on Drying: ≤ 1.0 %
• pH (1mol/L in Water @ 20 ^oC: 5.0 - 7.0
• Solubility (0.1M in water): Clear and Colorless

PR1MA™ Streptomycin Sulfate

• Appearance: Fine White Powder
• Appearance of Solution: Clear
• Abnormal Toxicity: Meets The Requirements
• Bacterial Endotoxins : ≤ 0.25 IU/mg
• Colorimetric: ≥ 90.0 %
• Identification: Complies
• Loss on Drying (EP): ≤ 7.0 %
• Loss on Drying (USP): ≤ 5.0 %
• Methanol (GC): ≤ 0.3 %
• pH: 4.5 - 7.0
• Potency (Dried basis): ≥ 720 µg/mg
• Residual Solvents: No Class 1, 2, 3 or other residual solvents are present
• Streptomycin B: ≤ 3.0 %
• Sulfate: 18.0 - 21.5 %
• Sulfated Ash: ≤ 1.0 %
• BSE/TSE: BSE/TSE Free

PR1MA™ IPTG [Isopropyl-β-D-thiogalactopyranoside], Dioxane Free

Common Name: Isopropyl-β-D-thiogalactopyranoside
CAS Number: 367-93-1
Molecular Weight: 238.3
Chemical Formula: C₉H₁₈O₅S
Solubility: Water, ethanol
Storage Temp: 2-8°C

IPTG is combined with X-GAL to detect lac+ colonies or cells in a colorimetric assay. Distinguishes recombinants (white) from non- recombinants (blue) in cloning strategies using vectors such as Lambda-11, M13mp 18 and 19, pUC18 and 19, pUR222 containing the lacZ gene.

Dioxane-Free
Water Content: <0.49%

Research or further manufacturing use only, not for food or drug use.

• Appearance: White Crystalline Powder
• Assay (HPLC): 98.0 - 101.0 %
• Purity (HPLC): ≥ 99.0 %
• 1,4-Dioxane: Not Detected
• Absorbance @300nm (5% w/v sol in H₂O): ≤ 0.13
• Absorbance @400nm (5% w/v solution in H₂O): ≤ 0.06
• Identification: IR Concordant with Standard
• Melting Range: 110 - 114 °C
• Moisture Content (KF): ≤ 1.0 %
• pH (5% in water): 5.0 - 7.0
• Solubility: Soluble in Water and Methanol
• Specific Optical Rotation: -34.5 - -28.5 ^o
• BSE/TSE Free: BSE/TSE Free
• Non Animal Origin: Non Animal Origin
• Country of Origin: Report