Chat with an Expert


RoboSep™-S - The Fully Automated Cell Separator

More Views


RoboSep™-S - The Fully Automated Cell Separator

1 Unit
Catalog #21000

RoboSep™ Tube Kit (9 Plastic Tubes + Tip Head Protector)

RoboSep™ tube kit

1 Kit
Catalog #20155

RoboSep™ Tip Head Polishing Compound

RoboSep™ support reagent

7 mL
Catalog #20119
54 USD

Experience first-hand how RoboSep™-S can increase the efficiency in your lab by automating all cell labeling and isolation steps. Request a Demo.

Required Products


RoboSep™-S is the next-generation RoboSep™ instrument for fully automated cell separation. Using EasySep™ technology, RoboSep™-S performs all steps necessary to magnetically label and separate virtually any cell type by positive or negative selection. RoboSep™-S is designed to minimize sample handling, eliminate cross-contamination, and reduce “hands-on” time.

To view cell isolation kits for use with RoboSep™-S, visit our Cell Isolation Products page.

Leasing options and warranty coverage are available. Please contact us for further information.

For more information about Instrument Services including additional service packages and software please see our instrumentation overview.
• RoboSep™-S Base Unit (Catalog #21001)
• "The Big Easy" EasySep™ Magnets (Catalog #18001)
• RoboSep™ Service Rack (Catalog #20101)
• RoboSep™ Tube Kits (Catalog #20155)
• USB Flash Drive
• RoboSep™ User Reference Manual (Catalog #29792)
• RoboSep™ Quick Start Guide (Catalog #28943)
• 1-Year Warranty (Catalog #21200)
Cell Isolation
Area of Interest:
Chimerism; HLA; Immunology; Stem Cell Biology

Scientific Resources

Educational Materials

Load More Educational Materials

Data and Publications


Journal of immunology (Baltimore, Md. : 1950) 2017 FEB

CD31, a Valuable Marker to Identify Early and Late Stages of T Cell Differentiation in the Human Thymus.

Douaisi M et al.


Although CD31 expression on human thymocytes has been reported, a detailed analysis of CD31 expression at various stages of T cell development in the human thymus is missing. In this study, we provide a global picture of the evolution of CD31 expression from the CD34(+) hematopoietic precursor to the CD45RA(+) mature CD4(+) and CD8(+) single-positive (SP) T cells. Using nine-color flow cytometry, we show that CD31 is highly expressed on CD34(+) progenitors and stays high until the early double-positive stage (CD3(-)CD4(+)CD8α(+)β(-)). After β-selection, CD31 expression levels become low to undetectable. CD31 expression then increases and peaks on CD3(high)CD4(+)CD8(+) double-positive thymocytes. However, following positive selection, CD31 expression differs dramatically between CD4(+) and CD8(+) lineages: homogeneously high on CD8 SP but lower or negative on CD4 SP cells, including a subset of CD45RA(+)CD31(-) mature CD4(+) thymocytes. CD31 expression on TCRγδ thymocytes is very similar to that of CD4 SP cells. Remarkably, there is a substantial subset of semimature (CD45RA(-)) CD4 SP thymocytes that lack CD31 expression. Moreover, FOXP3(+) and ICOS(+) cells are overrepresented in this CD31(-) subpopulation. Despite this CD31(-)CD45RA(-) subpopulation, most egress-capable mature CD45RA(+) CD4 SP thymocytes express CD31. The variations in CD31 expression appear to coincide with three major selection processes occurring during thymopoiesis: β-selection, positive selection, and negative selection. Considering the ability of CD31 to modulate the TCR's activation threshold via the recruitment of tyrosine phosphatases, our results suggest a significant role for CD31 during T cell development.
Cancer genetics 2016 MAR

Optimal strategy for obtaining routine chromosome analysis by using negative fractions of CD138 enriched plasma cells.

Ortega V et al.


Fluorescence in situ hybridization (FISH) is superior to routine chromosome analysis (RCA) in detecting important prognostic genetic abnormalities in plasma cell dyscrasia (PCD); however, its sensitivity is hampered due to paucity of plasma cells (PC) in whole bone marrow (BM). Studies showed that the abnormality detection rate in enriched plasma cells (EPC) is greater than unselected plasma cells (UPC), but purification techniques are limiting to only FISH when sample volumes are inadequate. Not performing RCA may compromise patient care since RCA is equally important for detecting non-PC related abnormalities when the diagnosis is undefined. To resolve this critical issue, we designed a study where an immuno-magnetic CD138 enriched positive selection was used for FISH while the negative fraction (NF) was used to retrieve other myeloid elements for RCA. Parallel FISH studies were performed using UPC and CD138 EPC, while karyotyping was achieved using whole BM and discarded myeloid elements from the NF. Results showed that the abnormality rate of EPC was doubled compared to UPC for FISH, and CA displayed 100% success rate using the NF. PCD related chromosome abnormalities were confined to whole BM while non-PCD related abnormalities were found in both whole BM and NF. Our results demonstrate the feasibility of using the NF for RCA.
Human immunology 2016 JUN

Flow cytometry crossmatch reactivity with pronase-treated T cells induced by non-HLA autoantibodies in human immunodeficiency virus-infected patients.

Szewczyk K et al.


Pronase treatment is used in the flow cytometry crossmatch (FCXM) to prevent nonspecific antibody binding on B cells. However, we have observed unexpected positive results with pronase-treated T cells in human immunodeficiency virus (HIV)-infected patients. In this study, 25 HIV-infected patients without HLA antibodies were tested with pronase-treated and nontreated cells. HIV-positive sera were pretreated with reducing agents and preabsorbed with pronase-treated and nontreated T or B cells before crossmatching. All patients displayed FCXM reactivity with pronase-treated T cells but not with nontreated T cells. None of the patients exhibited FCXM reactivity with pronase-treated and nontreated B cells. These patients displayed FCXM reactivity with pronase-treated CD4+ and CD8+ T cells but not with their nontreated counterparts. Preabsorption with pronase-treated T cells reduced the T cell FCXM reactivity. Preabsorption with pronase-treated B cells or nontreated T and B cells did not have any effect on the T cell FCXM reactivity. Pretreatment with reducing agents did not affect the T cell FCXM reactivity. 15 of 21 HIV-infected kidney allograft recipients with pronase-treated T cell FCXM reactivity display long-term graft survival (1193±631days). These data indicate that HIV-infected patients have nondeleterious autoantibodies recognizing cryptic epitopes exposed by pronase on T cells.
Leukemia & lymphoma 2016 JUN

Cord blood chimerism and relapse after haplo-cord transplantation.

van Besien K et al.


Haplo-cord stem cell transplantation combines the infusion of CD34 selected hematopoietic progenitors from a haplo-identical donor with an umbilical cord blood (UCB) graft from an unrelated donor and allows faster count recovery, with low rates of disease recurrence and chronic graft-versus-host disease (GVHD). But the contribution of the umbilical cord blood graft to long-term transplant outcome remains unclear. We analyzed 39 recipients of haplo-cord transplants with acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS), engrafted and in remission at 2 months. Median age was 66 (18-72) and all had intermediate, high, or very-high risk disease. Less than 20% UCB chimerism in the CD33 lineage was associated with an increased rate of disease recurrence (54% versus 11% p textless 0.0001) and decrease in one year progression-free (20% versus 55%, p = 0.004) and overall survival (30% versus 62%, p = 0.02). Less than 100% UCB chimerism in the CD3 lineage was associated with increase rate of disease recurrence (46% versus 12%, p = 0.007). Persistent haplo-chimerism in the CD3 lineage was associated with an increased rate of disease recurrence (40% versus 15%, p = 0.009) Chimerism did not predict for treatment related mortality. The cumulative incidence of acute GVHD by day 100 was 43%. The cumulative incidence of moderate/severe chronic GVHD was only 5%. Engraftment of the umbilical cord blood grafts provides powerful graft-versus-leukemia (GVL) effects which protect against disease recurrence and is associated with low risk of chronic GVHD. Engraftment of CD34 selected haplo-identical cells can lead to rapid development of circulating T-cells, but when these cells dominate, GVL-effects are limited and rates of disease recurrence are high.
Nature Biotechnology 2016 APR

Directed evolution of a recombinase that excises the provirus of most HIV-1 primary isolates with high specificity.

Karpinski J et al.


Current combination antiretroviral therapies (cART) efficiently suppress HIV-1 reproduction in humans, but the virus persists as integrated proviral reservoirs in small numbers of cells. To generate an antiviral agent capable of eradicating the provirus from infected cells, we employed 145 cycles of substrate-linked directed evolution to evolve a recombinase (Brec1) that site-specifically recognizes a 34-bp sequence present in the long terminal repeats (LTRs) of the majority of the clinically relevant HIV-1 strains and subtypes. Brec1 efficiently, precisely and safely removes the integrated provirus from infected cells and is efficacious on clinical HIV-1 isolates in vitro and in vivo, including in mice humanized with patient-derived cells. Our data suggest that Brec1 has potential for clinical application as a curative HIV-1 therapy.