midpolarity Crossbond phase
Excellent inertness and selectivity for active environmental compounds, such as PAHs. Low bleed for use with sensitive detectors, such as MS. 340/360 °C upper temperature limits. Equivalent to USP phase G3.
midpolarity Crossbond phase
Special selectivity and excellent inertness for substituted polar compounds, such as drugs, pesticides, herbicides, PCBs, phenols, etc. Provides superior separation for cannabinoids. Very low-bleed phase for GC-MS analysis. Extended temperature range: 50 °C up to 360 °C.
midpolarity Crossbond phase
Low-bleed, high-thermal stability column —maximum temperatures up to 300 –320 °C. Inert —excellent peak shape for a wide range of compounds. Selective —G43 phase highly selective for volatile organics and residual solvents, great choice for USP <467 >. Manufactured for column-to-column reproducibility —well suited for validated methods.
midpolarity Crossbond phase
Highest thermal stability in the industry ensures dependable, accurate MS results and increased uptime. Stabilized cyano phase selectivity improves the performance of existing methods. Ideal for solvents, glycols, and other polar compounds. Rigorous QC testing ensures inertness and accurate, reliable data for multiple compound classes. Maximum temperature: 320 °C.
low-polarity phase; Crossbond 1,4-bis(dimethylsiloxy)phenylene dimethyl polysiloxane
Engineered to be a low-bleed GC-MS column. Excellent inertness for active compounds. General-purpose columns —ideal for GC-MS analysis of semivolatiles, polycyclic aromatic compounds, chlorinated hydrocarbons, phthalates, phenols, amines, organochlorine pesticides, organophosphorus pesticides, drugs, solvent impurities, and hydrocarbons. Temperature range: -60 °C to 350 °C.
HILIC silica column designed for increased retention of polar compounds without ion-pairing reagents. 2.7 µm Raptor core-shell particles provide the speed of SPP, with greater efficiency and capacity than 5 µm particles. Ideal for increasing sensitivity and selectivity in LC-MS analyses. Fully compatible with both HPLC and UHPLC when using low backpressure HILIC mobile phases. Switch to a Raptor HILIC-Si LC column when you need more retention and resolution of hydrophilic, polar analytes.
Ideal for bioanalytical testing applications like drug and metabolite analyses. Heightened selectivity and retention for compounds that are hard to resolve or elute early on C18 and other phenyl chemistries. Limits ionization suppression and allows simple, MS-friendly mobile phases. Part of Restek’s Raptor LC column line featuring 1.8, 2.7, and 5 µm SPP core-shell silica.
Ideal for high-throughput LC-MS/MS applications with minimal sample preparation. Well-balanced retention profile for better detection and integration of large, multiclass analyte lists. Sterically protected to endure low-pH mobile phases without sacrificing retention or peak quality. Part of Restek’s Raptor LC column line featuring 1.8, 2.7, and 5 µm SPP core-shell silica.
A traditional end-capped C18 ideal for general-purpose use in reversed-phase chromatography. Wide pH range (2–8) provides excellent data quality for many applications, matrices, and compounds. Offers the highest hydrophobic retention of any Raptor phase. Part of Restek’s Raptor LC column line featuring 1.8, 2.7, and 5 µm SPP core-shell silica.
Capable of both reversed-phase and HILIC separations. Ideal for increasing sensitivity and selectivity in LC-MS analyses. Offers increased retention for charged bases. Part of Restek’s Raptor LC column line featuring 1.8, 2.7, and 5 µm SPP core-shell silica. Switch to a Raptor FluoroPhenyl LC column when you need more retention and selectivity for basic and hydrophilic compounds than you can achieve on a C18.
Free-Turn architecture lets you change cartridges by hand without breaking inlet/outlet fluid connections —no tools needed. Patented titanium hybrid ferrules can be installed repeatedly without compromising high-pressure seal. Auto-adjusting design provides ZDV (zero dead volume) connection to any 10-32 female port.
Free-Turn architecture lets you change cartridges by hand without breaking inlet/outlet fluid connections —no tools needed. Patented titanium hybrid ferrules can be installed repeatedly without compromising high-pressure seal. Auto-adjusting design provides ZDV (zero dead volume) connection to any 10-32 female port. EXP direct connect holder requires separate guard column cartridges; available from Restek in 2.1, 3.0, and 4.6 mm.
Fewest mixtures needed for calibration and matrix spikes. Mixtures formulated for maximum stability. Contains most routinely analyzed compounds.
Includes all target analytes except the six gases, which are available separately as 502.2 Calibration Mix #1.
Contains 76 compounds in one convenient ampul for the analysis of VOCs in solid waste. Quantitatively analyzed to confirm concentration and identity of each compound.
Designed for use in all QuEChERS methods for pesticides in fruits and vegetables, including the original unbuffered method, AOAC 2007.01, and EN 15662. Kit contains organochlorine, organonitrogen, organophosphorus, and carbamate pesticides commonly used on fruits and vegetables. Volatile, polar, active, base-sensitive, and nonvolatile compounds are included to allow comprehensive evaluation of QuEChERS extraction and cleanup efficiencies, and optimization of GC and LC instrumental conditions. Ideal for initial method evaluations and ongoing method performance validations. Analytes are divided into three ampuls based on compatibility for maximum stability and shelf life.* Precise formulations improve data quality and operational efficiency; spend more time running samples and less time sourcing and preparing standards. Quantitatively analyzed to confirm the composition and stability of each mixture. *When combining compounds with different functionalities, chemical stability can be an issue. The analytes in this kit are separated into three mixes to ensure maximum long-term storage stability. For analysis, a fresh working standard should be prepared by combining the three kit mixes in a 1:1:1 ratio to prepare a 100 µg/mL working standard solution. Once blended, Restek does not recommend storing working standards or subsequent dilutions for future use. Contains 1 mL each of these mixtures. 31153: QuEChERS Performance Standard A 31154: QuEChERS Performance Standard B 31155: QuEChERS Performance Standard C
Browse our comprehensive list of QuEChERS reference standards, including internal standards and mixes for AOAC QuEChERS methods.
Essential mix for establishing the performance of SPME fibers and SPME Arrows. Verified composition and stability.
for Agilent 6890 and 7890 instruments
Get the same GC separation in less time—use a GC Accelerator kit and the EZGC method translator to accurately convert methods to a scaled-down column format. Scaled-down methods let you speed up analysis time and increase sample throughput without capital investment. GC Accelerator kit installs easily without damaging the GC column or interfering with the MS interface.
Revolutionary technology and inertness deliver the next level of True Blue Performance:
Deactivation—unbelievably low breakdown for low-level GC analyses. Reproducibility—unbeatable manufacturing and QC for reliability. Productivity—unparalleled stability and cleanliness.
for 10-32 fittings and 1/16
Unique nut driver allows easy 20,000+ psi seals without wrenches.* Patented ferrule can be installed repeatedly without compromising high-pressure seal. Precision design provides zero-dead-volume (ZDV) connection to any 10-32 port. Compact design fits in tight spaces, perfect for small oven compartments and six-port injection valves. Non-swaged ferrules mean vendor-specific tubing is not required. Suitable for both HPLC and UHPLC. *Rated to 20,000+ psi (1,400 bar) and tested to 30,000 psi (2,068 bar).
EXP Hand-Tight Fittings
Hand-tight fitting style achieves effortless HPLC seals—no tools needed for a 8,700+ psi seal. Both hand-tight and hex-head styles wrench tighten for reliable UHPLC use up to 20,000+ psi! Patented ferrule can be installed repeatedly without compromising high-pressure seal. Hybrid design combines the durability of titanium with the sealing ability of PEEK. Cutting-edge system provides ZDV (zero dead volume) connection to any 10-32 female port. Compatible with 1/16" PEEK and stainless steel tubing.
Keep your LC columns and other supplies neatly organized, easy to find, and ready to use.
Free-flowing salts transfer easily and completely. Easy-open packets eliminate the need for a second empty tube for salt transfer. Convenient slim packets fit perfectly into tubes to prevent spills. Ready-to-use tubes, no glassware required. Pre-weighed, ultra-pure extraction salts. Ideal for original unbuffered, AOAC (2007.01), and European (EN 15662) QuEChERS methods.
Fast, Simple Sample Prep for Multiresidue Pesticide Analysis
Packaged in foil subpacks of 10 for enhanced protection and storage stability. Ready-to-use tubes, no glassware required. Pre-weighed, ultra-pure sorbents. Support original unbuffered, AOAC (2007.01), European (EN 15662), and mini-multiresidue QuEChERS methods.
Ideal for low-level reactive sulfur (5
–20 ppb), TO-14A, or TO-15 compounds
Siltek-treated canister with optional Siltek-treated valve offers unsurpassed inertness, even for sulfur-containing or brominated compounds. High-quality, metal-to-metal seal, 2/3-turn valve with stainless steel diaphragms prevent sample adsorption for more-accurate results. Canisters and valves made of 304 and 316 stainless steel to withstand the rigors of field work. Both 2-port and 3-port valves available; 3-port valve includes -30 " Hg/60 psi vacuum/pressure gauge (other gauges available).
Optimized for Methods TO-14A, TO-15, IP-1A, ASTM D5466, OSHA PV 2120, and NJ DEP Low Level TO-15
Proprietary electropolished surface maintains compound stability. High-quality, metal-to-metal seal, 2/3-turn valve with stainless steel diaphragms prevents sample adsorption for more accurate results. Both 2-port and 3-port valves available; 3-port valve includes -30 " Hg/60 psi vacuum/pressure gauge (other gauges available). SUMMA canister equivalent.
For Restek air sampling canisters
Proven long life —durable design is engineered to exceed 15,000 cycles. Leak-free performance —every valve is helium leak-tested to 1x10 mL/sec. -6 Effortless operation —easily finger-turn to achieve full valve closure (only 10 in-lb). Enhanced damage-resistance —W-type valve seats are work-hardened and wetted surfaces contain no moving parts.
For Entech air sampling canisters
Easy retrofit —connect to Entech 3.2 L, 6 L, and 15 L air canisters; replace TOV and TOV-2 valves without modification! Proven long life —durable design is engineered to exceed 15,000 cycles; identical internal design to RAVE valves for Restek air canisters. Leak-free performance —every valve is helium leak-tested to 1x10 mL/sec. -6 Effortless operation —easily finger-turn to achieve full valve closure (only 10 in-lb). Enhanced damage-resistance —W-type valve seats are work-hardened and wetted surfaces contain no moving parts.
Find the bags you need —we offer sizes from 0.5 L to 100 L. Lightweight and easy to use. Available with polypropylene or stainless steel valve; choose bags with a septum fitting for syringe sampling or standard spiking. Maximum operating temperature: 82 °C (180 °F) with polypropylene valves or 202 °C (397 °F) with stainless steel valves. Note: Use only Point Style 5 syringes.
Good stability for low molecular weight compounds, such as methane, CO, CO , and permanent gases. 2 Chemically inert with light and moisture protection. Not recommended for low ppm VOCs due to background levels. Protective 4-layer barrier minimizes gas permeability. - 60 gauge nylon (outer layer) - Polyethylene - 0.0003 " aluminum foil - 0.002 " polyethylene (inner layer) Maximum operating temperature: 82 °C (180 °F). Note: Use only Point Style 5 syringes.
Excellent alternative to Tedlar bags for collection of most VOCs. Unlike Tedlar bags, ALTEF bags do not produce background levels of dimethylacetamide (DMAC) or phenol. Very low VOC and sulfur background compared to Tedlar bags. Not recommended for ketones, acetates, hydrogen sulfide, or permanent gases. Durable polyvinylidene fluoride (PVDF) film is resistant to abrasion and chemicals, including most acids and organic compounds. Contain no additives, fillers, or pigments. Note: Use only Point Style 5 syringes.
Use with 1, 3, or 6 L canisters for grab air sampling. Variety of orifice sizes for fast sampling from 5 to 60 minutes. Connect 1/4 " compression fitting directly to canister valve inlet. Replaceable frit protects orifice and valve from particulates. Sample inlet design minimizes water entry into sampling train. Individual replacement components available.
Rugged stainless steel construction ensures longer lifetimes. Faster extraction means higher sample throughput. Better sensitivity allows lower LODs.
Suitable for a wide range of analyte chemistries and sample matrices. Reliable performance meets or exceeds other brands. Robust aluminum hub is more durable than plastic. Optimized for PAL system autosamplers and compatible with most GC inlets. SPME automated sample preparation reduces sample handling and solvent consumption.
Due to the relatively large diameter of Restek PAL SPME Arrows, you must modify the GC inlet using an instrument-specific conversion kit prior to use.
Polypropylene protein precipitation (PPT) 96-well plates offer highly efficient >99% protein removal. Minimum 24-hour drip-free feature for easy in-well protein precipitation —no fear of backflushing or contamination. Built-in dual-layer membrane with different porosities in each layer prohibits clogging and speeds filtration. Solvent-first method streamlines sample preparation. 2.0 mL deep well —suitable for mixing by vortex or pipette. 3-way versatility for filtration —compatible with all common devices: - Vacuum manifold - Positive pressure manifold - Centrifugation Can also be used to increase throughput in general filtration applications.